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values | questionId int64 1 80M ⌀ | title stringlengths 15 150 ⌀ | score int64 -10 35.3k ⌀ | viewCount int64 6 16.7M ⌀ | answerCount int64 0 296 ⌀ | isAnswered bool 2
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values | reputation int64 1 1.53M ⌀ | userType stringclasses 3
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values | location stringclasses 279
values | acceptRate int64 17 100 ⌀ | answerId int64 1.13k 80M ⌀ | isAccepted bool 2
classes | bodyText stringlengths 31 24.4k ⌀ | bodyHtml stringlengths 39 34.9k ⌀ | answers listlengths 1 3 ⌀ | answersFetched int64 0 3 ⌀ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
613218 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/613218 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 613,183 | null | 7,099 | null | null | null | null | null | 2009-03-05T00:59:34 | 2020-11-22T19:29:02 | Devin Jeanpierre | null | CC BY-SA 4.0 | null | 18,515 | 96,214 | null | null | null | null | null | null | null | null | null | null | null | null | null | 613,218 | true | Python 3.7+ or CPython 3.6 Dicts preserve insertion order in Python 3.7+. Same in CPython 3.6, but it's an implementation detail . >>> x = {1: 2, 3: 4, 4: 3, 2: 1, 0: 0} >>> {k: v for k, v in sorted(x.items(), key=lambda item: item[1])} {0: 0, 2: 1, 1: 2, 4: 3, 3: 4} or >>> dict(sorted(x.items(), key=lambda item: item[... | <h3>Python 3.7+ or CPython 3.6</h3>
<p>Dicts preserve insertion order in Python 3.7+. Same in CPython 3.6, but <a href="https://stackoverflow.com/q/39980323/4518341">it's an implementation detail</a>.</p>
<pre><code>>>> x = {1: 2, 3: 4, 4: 3, 2: 1, 0: 0}
>>> {k: v for k, v in sorted(x.items(), key=lam... | null | null |
3294899 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/3294899 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 3,294,889 | null | 7,028 | null | null | null | null | null | 2010-07-20T22:29:33 | 2020-01-03T05:46:19 | sberry | null | CC BY-SA 4.0 | null | 141,555 | 132,811 | null | null | null | null | null | null | null | null | null | null | null | null | null | 3,294,899 | true | key is just a variable name. for key in d: will simply loop over the keys in the dictionary, rather than the keys and values. To loop over both key and value you can use the following: For Python 3.x: for key, value in d.items(): For Python 2.x: for key, value in d.iteritems(): To test for yourself, change the word key... | <p><code>key</code> is just a variable name. </p>
<pre><code>for key in d:
</code></pre>
<p>will simply loop over the keys in the dictionary, rather than the keys and values. To loop over both key and value you can use the following:</p>
<p>For Python 3.x:</p>
<pre><code>for key, value in d.items():
</code></pre>... | null | null |
7220510 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/7220510 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 4,810,841 | null | 6,934 | null | null | null | null | null | 2011-08-28T10:56:51 | 2017-05-31T10:48:56 | user123444555621 | null | CC BY-SA 3.0 | null | 27,862 | 154,610 | null | null | null | null | null | null | null | null | null | null | null | null | null | 7,220,510 | true | Pretty-printing is implemented natively in JSON.stringify() . The third argument enables pretty printing and sets the spacing to use: var str = JSON.stringify(obj, null, 2); // spacing level = 2 If you need syntax highlighting, you might use some regex magic like so: function syntaxHighlight(json) { if (typeof json != ... | <p><strong><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify" rel="noreferrer">Pretty-printing is implemented natively in <code>JSON.stringify()</code></a></strong>. The third argument enables pretty printing and sets the spacing to use:</p>
<pre><code>var str = J... | null | null |
80113 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/80113 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 79,923 | null | 6,917 | null | null | null | null | null | 2008-09-17T04:52:19 | 2021-11-28T14:10:20 | Jeff Hill | null | CC BY-SA 4.0 | null | 14,742 | 71,440 | null | null | null | null | null | null | null | null | null | null | null | null | null | 80,113 | true | The stack is the memory set aside as scratch space for a thread of execution. When a function is called, a block is reserved on the top of the stack for local variables and some bookkeeping data. When that function returns, the block becomes unused and can be used the next time a function is called. The stack is always... | <p>The stack is the memory set aside as scratch space for a thread of execution. When a function is called, a block is reserved on the top of the stack for local variables and some bookkeeping data. When that function returns, the block becomes unused and can be used the next time a function is called. The stack is ... | null | null |
586189 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/586189 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 586,182 | null | 6,880 | null | null | null | null | null | 2009-02-25T14:32:56 | 2024-05-24T03:38:18 | tvanfosson | null | CC BY-SA 4.0 | null | 12,950 | 534,709 | null | null | null | null | null | null | null | null | null | null | null | null | null | 586,189 | true | You want the splice function on the native array object. arr.splice(index, 0, item); will insert item into arr at the specified index (deleting 0 items first, that is, it's just an insert). In this example we will create an array and add an element to it into index 2: var arr = []; arr[0] = "Jani"; arr[1] = "Hege"; arr... | <p>You want the <strong><a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/splice" rel="noreferrer"><code>splice</code></a></strong> function on the native array object.</p>
<p><code>arr.splice(index, 0, item);</code> will insert <code>item</code> into <code>arr</code> at th... | null | null |
82852 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/82852 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 82,831 | null | 6,797 | null | null | null | null | null | 2008-09-17T12:57:51 | 2024-06-29T17:58:04 | rslite | null | CC BY-SA 4.0 | null | 15,682 | 85,592 | null | null | null | null | null | null | null | null | null | null | null | null | null | 82,852 | false | If the reason you're checking is so you can do something like if file_exists: open_it() , it's safer to use a try around the attempt to open it. Checking and then opening risks the file being deleted or moved or something between when you check and when you try to open it. If you're not planning to open the file immedi... | <p>If the reason you're checking is so you can do something like <code>if file_exists: open_it()</code>, it's safer to use a <code>try</code> around the attempt to open it. Checking and then opening risks the file being deleted or moved or something between when you check and when you try to open it.</p>
<p>If you're n... | null | null |
38578 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/38578 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 38,549 | null | 6,755 | null | null | null | null | null | 2008-09-01T22:59:34 | 2021-12-14T01:51:41 | Mark Harrison | null | CC BY-SA 4.0 | null | 116 | 306,711 | null | null | null | null | null | null | null | null | null | null | null | null | null | 38,578 | true | Assuming you're joining on columns with no duplicates, which is a very common case: An inner join of A and B gives the result of A intersect B, i.e. the inner part of a Venn diagram intersection. An outer join of A and B gives the results of A union B, i.e. the outer parts of a Venn diagram union. Examples Suppose you ... | <p>Assuming you're joining on columns with no duplicates, which is a very common case:</p>
<ul>
<li><p>An inner join of A and B gives the result of A intersect B, i.e. the inner part of a <a href="http://en.wikipedia.org/wiki/Venn_diagram" rel="noreferrer">Venn diagram</a> intersection.</p>
</li>
<li><p>An outer join o... | null | null |
46181 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/46181 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 46,155 | null | 6,668 | null | null | null | null | null | 2008-09-05T16:15:34 | 2023-08-31T18:18:10 | John Rutherford | null | CC BY-SA 4.0 | null | 3,880 | 10,702 | null | null | null | null | null | null | null | null | null | null | null | null | null | 46,181 | true | Using regular expressions is probably the best way of validating an email address in JavaScript. View a bunch of tests on JSFiddle taken from Chromium . const validateEmail = (email) => { return String(email) .toLowerCase() .match( /^(([^<>()[\]\\.,;:\s@"]+(\.[^<>()[\]\\.,;:\s@"]+)*)|.(".+"))@((\[[0-9]{1,3}\.[0-9]{1,3}... | <p>Using <a href="http://en.wikipedia.org/wiki/Regular_expression" rel="noreferrer">regular expressions</a> is probably the best way of validating an email address in JavaScript. <a href="http://jsfiddle.net/ghvj4gy9/embedded/result.js" rel="noreferrer">View a bunch of tests on JSFiddle</a> taken from <a href="https://... | null | null |
509295 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/509295 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 509,211 | null | 6,664 | null | null | null | null | null | 2009-02-03T22:48:24 | 2024-05-15T16:00:07 | Greg Hewgill | null | CC BY-SA 4.0 | null | 893 | 1,007,155 | null | null | null | null | null | null | null | null | null | null | null | null | null | 509,295 | true | The syntax is: a[start:stop] # items start through stop-1 a[start:] # items start through the rest of the array a[:stop] # items from the beginning through stop-1 a[:] # a copy of the whole array There is also the step value, which can be used with any of the above: a[start:stop:step] # start through not past stop, by ... | <p>The syntax is:</p>
<pre><code>a[start:stop] # items start through stop-1
a[start:] # items start through the rest of the array
a[:stop] # items from the beginning through stop-1
a[:] # a copy of the whole array
</code></pre>
<p>There is also the <code>step</code> value, which can be used with a... | null | null |
14220323 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/14220323 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 14,220,321 | null | 6,659 | null | null | null | null | null | 2013-01-08T17:06:14 | 2022-04-08T13:02:30 | Felix Kling | null | CC BY-SA 4.0 | null | 218,196 | 821,265 | null | null | null | null | null | null | null | null | null | null | null | null | null | 14,220,323 | true | → For a more general explanation of asynchronous behaviour with different examples, see Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference → If you already understand the problem, skip to the possible solutions below. The problem The A in Ajax stands for asynchronous . Th... | <blockquote>
<p><em>→ For a more general explanation of asynchronous behaviour with different examples, see</em> <a href="https://stackoverflow.com/q/23667086/218196">Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference</a></p>
<p><em>→ If you already understand the problem... | null | null |
17071908 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/17071908 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 17,071,871 | null | 6,653 | null | null | null | null | null | 2013-06-12T17:44:20 | 2023-09-26T05:14:31 | unutbu | null | CC BY-SA 4.0 | null | 190,597 | 888,423 | null | null | null | null | null | null | null | null | null | null | null | null | null | 17,071,908 | true | To select rows whose column value equals a scalar, some_value , use == : df.loc[df['column_name'] == some_value] To select rows whose column value is in an iterable, some_values , use isin : df.loc[df['column_name'].isin(some_values)] Combine multiple conditions with & : df.loc[(df['column_name'] >= A) & (df['column_na... | <p>To select rows whose column value equals a scalar, <code>some_value</code>, use <code>==</code>:</p>
<pre><code>df.loc[df['column_name'] == some_value]
</code></pre>
<p>To select rows whose column value is in an iterable, <code>some_values</code>, use <code>isin</code>:</p>
<pre><code>df.loc[df['column_name'].isin(s... | null | null |
3207973 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/3207973 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 3,207,219 | null | 6,617 | null | null | null | null | null | 2010-07-08T21:01:11 | 2023-11-27T15:59:32 | pycruft | null | CC BY-SA 4.0 | null | 346,573 | 69,475 | null | null | null | null | null | null | null | null | null | null | null | null | null | 3,207,973 | false | os.listdir() returns everything inside a directory -- including both files and directories . os.path 's isfile() can be used to only list files: from os import listdir from os.path import isfile, join onlyfiles = [f for f in listdir(mypath) if isfile(join(mypath, f))] Alternatively, os.walk() yields two lists for each ... | <p><strong><a href="https://docs.python.org/3/library/os.html#os.listdir" rel="noreferrer" title="os.listdir"><code>os.listdir()</code></a></strong> returns everything inside a directory -- including both <strong>files</strong> and <strong>directories</strong>.</p>
<p><a href="https://docs.python.org/3/library/os.path.... | null | null |
21699210 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/21699210 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 3,790,454 | null | 6,608 | null | null | null | null | null | 2014-02-11T10:27:28 | 2025-10-13T10:06:40 | Steve Bennett | null | CC BY-SA 4.0 | null | 263,268 | 130,940 | null | null | null | null | null | null | null | null | null | null | null | null | null | 21,699,210 | false | There are 5 6 NINE (or 63*, depending how you count) different ways to write multi-line strings in YAML. TL;DR Use > if you want to break a string up for readability but for it to still be treated as a single-line string: interior line breaks will be stripped out, there will only be one line break at the end: key: > Yo... | <p>There are <s>5</s> <em><s>6</s></em> <em><strong>NINE</strong></em> (or 63*, depending how you count) different ways to write multi-line strings in YAML.</p>
<h3>TL;DR</h3>
<ul>
<li><p>Use <code>></code> if you want to break a string up for readability but for it to still be treated as a single-line string: inter... | null | null |
11828573 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/11828573 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 11,828,270 | null | 6,547 | null | null | null | null | null | 2012-08-06T12:46:16 | 2022-11-12T17:49:42 | dirvine | null | CC BY-SA 4.0 | null | 1,445,334 | 60,459 | null | null | null | null | null | null | null | null | null | null | null | null | null | 11,828,573 | true | Hit the Esc key to enter "Normal mode". Then you can type : to enter "Command-line mode". A colon ( : ) will appear at the bottom of the screen and you can type in one of the following commands. To execute a command, press the Enter key. :q to quit (short for :quit ) :q! to quit without saving (short for :quit! ) :wq t... | <p>Hit the <kbd>Esc</kbd> key to enter "Normal mode". Then you can type <code>:</code> to enter "Command-line mode". A colon (<code>:</code>) will appear at the bottom of the screen and you can type in one of the following commands. To execute a command, press the <kbd>Enter</kbd> key.</p>
<ul>
<li>... | null | null |
22345808 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/22345808 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 22,343,224 | null | 6,505 | null | null | null | null | null | 2014-03-12T08:28:07 | 2024-06-14T02:40:24 | jgillich | null | CC BY-SA 4.0 | null | 941,764 | 77,537 | null | null | null | null | null | null | null | null | null | null | null | null | null | 22,345,808 | true | See the NPM docs and semver docs : ~version “Approximately equivalent to version” , will automatically update you to all future patch versions that are backwards-compatible, without incrementing the minor version. ~1.2.3 will use releases from 1.2.3 to < 1.3.0 . ^version “Compatible with version” , will automatically u... | <p>See the <a href="https://docs.npmjs.com/cli/v8/configuring-npm/package-json#dependencies" rel="noreferrer">NPM docs</a> and <a href="https://docs.npmjs.com/cli/v6/using-npm/semver" rel="noreferrer">semver docs</a>:</p>
<ul>
<li><p><code>~version</code> <strong>“Approximately equivalent to version”</strong>, will aut... | null | null |
215505 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/215505 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 215,497 | null | 6,459 | null | null | null | null | null | 2008-10-18T19:57:50 | 2025-09-13T19:33:59 | David Segonds | null | CC BY-SA 4.0 | null | 13,673 | 85,233 | null | null | null | null | null | null | null | null | null | null | null | null | null | 215,505 | true | The official tutorial may be of some use to you. Class Package Subclass (same pkg) Subclass (diff pkg) World public ✅ ✅ ✅ ✅ ✅ protected ✅ ✅ ✅ ✅ ❌ no modifier ✅ ✅ ✅ ❌ ❌ private ✅ ❌ ❌ ❌ ❌ ✅: accessible ❌: not accessible | <p><a href="http://docs.oracle.com/javase/tutorial/java/javaOO/accesscontrol.html" rel="noreferrer">The official tutorial</a> may be of some use to you.</p>
<div class="s-table-container"><table class="s-table">
<thead>
<tr>
<th></th>
<th style="text-align: center;">Class</th>
<th style="text-align: center;">Package</t... | null | null |
426276 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/426276 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 426,258 | null | 6,458 | null | null | null | null | null | 2009-01-08T22:25:08 | 2019-08-18T19:04:24 | Xian | null | CC BY-SA 4.0 | null | 4,642 | 76,741 | null | null | null | null | null | null | null | null | null | null | null | null | null | 426,276 | true | Modern jQuery Use .prop() : $('.myCheckbox').prop('checked', true); $('.myCheckbox').prop('checked', false); DOM API If you're working with just one element, you can always just access the underlying HTMLInputElement and modify its .checked property: $('.myCheckbox')[0].checked = true; $('.myCheckbox')[0].checked = fal... | <h2>Modern jQuery</h2>
<p>Use <a href="https://api.jquery.com/prop" rel="noreferrer"><code>.prop()</code></a>:</p>
<pre><code>$('.myCheckbox').prop('checked', true);
$('.myCheckbox').prop('checked', false);
</code></pre>
<h2>DOM API</h2>
<p>If you're working with just one element, you can always just access the und... | null | null |
11304926 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/11304926 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 11,304,895 | null | 6,416 | null | null | null | null | null | 2012-07-03T05:21:39 | 2020-10-15T01:21:14 | Gryphius | null | CC BY-SA 4.0 | null | 774,116 | 79,936 | null | null | null | null | null | null | null | null | null | null | null | null | null | 11,304,926 | true | scp -r user@your.server.example.com:/path/to/foo /home/user/Desktop/ By not including the trailing '/' at the end of foo, you will copy the directory itself (including contents), rather than only the contents of the directory. From man scp (See online manual ) -r Recursively copy entire directories | <pre><code>scp -r user@your.server.example.com:/path/to/foo /home/user/Desktop/
</code></pre>
<p>By not including the trailing '/' at the end of foo, you will copy the directory itself (including contents), rather than only the contents of the directory.</p>
<p>From <code>man scp</code> (See <a href="http://man7.org/li... | null | null |
9229821 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/9229821 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 9,229,645 | null | 6,306 | null | null | null | null | null | 2012-02-10T15:05:41 | 2025-05-16T18:57:23 | georg | null | CC BY-SA 4.0 | null | 989,121 | 215,811 | null | null | null | null | null | null | null | null | null | null | null | null | null | 9,229,821 | false | TL;DR Using the Set constructor and the spread syntax : uniq = [...new Set(array)]; ( Note that var uniq will be an array... new Set() turns it into a set, but [... ] turns it back into an array again ) "Smart" but naïve way uniqueArray = a.filter(function(item, pos) { return a.indexOf(item) == pos; }) Basically, we it... | <h2>TL;DR</h2>
<p>Using the <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set" rel="noreferrer">Set</a> constructor and the <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax" rel="noreferrer">spread syntax</a>:</p>
<pre><code>u... | null | null |
2025541 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/2025541 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 2,025,282 | null | 6,262 | null | null | null | null | null | 2010-01-08T04:41:53 | 2024-04-21T14:41:20 | Alex Volovoy | null | CC BY-SA 4.0 | null | 176,761 | 68,544 | null | null | null | null | null | null | null | null | null | null | null | null | null | 2,025,541 | true | From the Android Developer Documentation : px Pixels - corresponds to actual pixels on the screen. in Inches - based on the physical size of the screen. 1 Inch OR 2.54 centimeters mm > Millimeters - based on the physical size of the screen. pt > Points - 1/72 of an inch based on the physical size of the screen. dp or d... | <p>From the <a href="http://developer.android.com/guide/topics/resources/more-resources.html#Dimension" rel="noreferrer">Android Developer Documentation</a>:</p>
<ol>
<li>
<blockquote>
<p><strong>px</strong><br />
<strong>Pixels</strong> - corresponds to actual pixels on the screen.</p>
</blockquote>
</li>
<li>
<blockq... | null | null |
135614 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/135614 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 134,882 | null | 6,229 | null | null | null | null | null | 2008-09-25T19:56:28 | 2025-03-20T18:01:33 | Lara Bailey | null | CC BY-SA 4.0 | null | 19,563 | 805,258 | null | null | null | null | null | null | null | null | null | null | null | null | null | 135,614 | true | The easiest way would be to find the head commit of the branch as it was immediately before the rebase started in the reflog ... git reflog and to reset the current branch to it. Suppose the old commit was HEAD@{2} in the ref log: git reset --soft "HEAD@{2}" (If you do not want to retain the working copy changes, you c... | <p>The easiest way would be to find the head commit of the branch as it was immediately before the rebase started in the <a href="https://git-scm.com/docs/git-reflog" rel="noreferrer">reflog</a>...</p>
<pre><code>git reflog
</code></pre>
<p>and to reset the current branch to it.</p>
<p>Suppose the old commit was <code>... | null | null |
221297 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/221297 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 221,294 | null | 6,184 | null | null | null | null | null | 2008-10-21T09:32:32 | 2022-08-07T22:28:24 | daveb | null | CC BY-SA 4.0 | null | 11,858 | 76,599 | null | null | null | null | null | null | null | null | null | null | null | null | null | 221,297 | true | Timestamp in milliseconds To get the number of milliseconds since Unix epoch , call Date.now : Date.now() Alternatively, use the unary operator + to call Date.prototype.valueOf : + new Date() Alternatively, call valueOf directly: new Date().valueOf() To support IE8 and earlier (see compatibility table ), create a shim ... | <h3>Timestamp in milliseconds</h3>
<p>To get the number of milliseconds since <a href="https://en.wikipedia.org/wiki/Unix_time" rel="noreferrer">Unix epoch</a>, call <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/now" rel="noreferrer"><code>Date.now</code></a>:</p>
<pre><... | null | null |
59839 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/59839 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 59,838 | null | 6,163 | null | null | null | null | null | 2008-09-12T20:07:06 | 2022-08-01T01:21:58 | Grundlefleck | null | CC BY-SA 4.0 | null | 4,120 | 130,465 | null | null | null | null | null | null | null | null | null | null | null | null | null | 59,839 | true | To check if a directory exists: if [ -d "$DIRECTORY" ]; then echo "$DIRECTORY does exist." fi To check if a directory does not exist: if [ ! -d "$DIRECTORY" ]; then echo "$DIRECTORY does not exist." fi However, as Jon Ericson points out, subsequent commands may not work as intended if you do not take into account that ... | <p>To check if a directory exists:</p>
<pre><code>if [ -d "$DIRECTORY" ]; then
echo "$DIRECTORY does exist."
fi
</code></pre>
<p>To check if a directory does not exist:</p>
<pre><code>if [ ! -d "$DIRECTORY" ]; then
echo "$DIRECTORY does not exist."
fi
</code></pre>
<hr />
<p>... | null | null |
417184 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/417184 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 417,142 | null | 6,159 | null | null | null | null | null | 2009-01-06T16:22:18 | 2025-05-08T14:09:15 | Paul Dixon | null | CC BY-SA 4.0 | null | 6,521 | 302,402 | null | null | null | null | null | null | null | null | null | null | null | null | null | 417,184 | true | Short answer - de facto limit of 2000 characters If you keep URLs under 2000 characters, they'll work in virtually any combination of client and server software, and any search engine. For specific use cases, longer URLs can be considered. Outside of search engines, 8000 characters offers wide compatibility as of 2023.... | <h2>Short answer - de facto limit of 2000 characters</h2>
<p>If you keep URLs under 2000 characters, they'll work in virtually any combination of client and server software, and any search engine.</p>
<p>For specific use cases, longer URLs can be considered. Outside of search engines, 8000 characters offers wide compat... | null | null |
513839 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/513839 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 513,832 | null | 6,154 | null | null | null | null | null | 2009-02-04T23:19:49 | 2023-11-20T14:05:47 | Aaron Maenpaa | null | CC BY-SA 4.0 | null | 2,603 | 123,778 | null | null | null | null | null | null | null | null | null | null | null | null | null | 513,839 | true | == tests for reference equality (whether they are the same object). .equals() tests for value equality (whether they contain the same data). Objects.equals() checks for null before calling .equals() so you don't have to (available as of JDK7, also available in Guava ). Consequently, if you want to test whether two stri... | <p><code>==</code> tests for reference equality (whether they are the same object).</p>
<p><code>.equals()</code> tests for value equality (whether they contain the same data).</p>
<p><a href="http://docs.oracle.com/javase/7/docs/api/java/util/Objects.html#equals(java.lang.Object,%20java.lang.Object)" rel="noreferrer">... | null | null |
388282 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/388282 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 388,242 | null | 6,150 | null | null | null | null | null | 2008-12-23T05:52:48 | 2025-01-21T19:44:54 | Johannes Schaub - litb | null | CC BY-SA 4.0 | null | 34,509 | 510,741 | null | null | null | null | null | null | null | null | null | null | null | null | null | 388,282 | false | Beginner Introductory, no previous programming experience Book Author(s) Description review C++ Primer * * Not to be confused with C++ Primer Plus (Stephen Prata), with a significantly less favorable review . Stanley Lippman, Josée Lajoie, and Barbara E. Moo ( updated for C++11 ) Coming at 1k pages, this is a very thor... | <h2>Beginner</h2>
<h3>Introductory, no previous programming experience</h3>
<div class="s-table-container"><table class="s-table">
<thead>
<tr>
<th>Book</th>
<th>Author(s)</th>
<th>Description</th>
<th>review</th>
</tr>
</thead>
<tbody>
<tr>
<td><a href="https://rads.stackoverflow.com/amzn/click/com/0321714113" rel="no... | null | null |
2334741 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/2334741 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 2,334,712 | null | 6,128 | null | null | null | null | null | 2010-02-25T14:39:55 | 2016-04-30T01:26:35 | Robin Day | null | CC BY-SA 3.0 | null | 40,655 | 102,998 | null | null | null | null | null | null | null | null | null | null | null | null | null | 2,334,741 | true | UPDATE Table_A SET Table_A.col1 = Table_B.col1, Table_A.col2 = Table_B.col2 FROM Some_Table AS Table_A INNER JOIN Other_Table AS Table_B ON Table_A.id = Table_B.id WHERE Table_A.col3 = 'cool' | <pre><code>UPDATE
Table_A
SET
Table_A.col1 = Table_B.col1,
Table_A.col2 = Table_B.col2
FROM
Some_Table AS Table_A
INNER JOIN Other_Table AS Table_B
ON Table_A.id = Table_B.id
WHERE
Table_A.col3 = 'cool'
</code></pre>
| null | null |
5201642 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/5201642 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 5,189,560 | null | 6,119 | null | null | null | null | null | 2011-03-05T04:19:17 | 2025-09-26T14:16:46 | Chris Johnsen | null | CC BY-SA 4.0 | null | 193,688 | 228,664 | null | null | null | null | null | null | null | null | null | null | null | null | null | 5,201,642 | false | You can do this fairly easily without git rebase or git merge --squash . In this example, we'll squash the last 3 commits: git reset --soft HEAD~3 If you also want to write the new commit message from scratch, this suffices: git reset --soft HEAD~3 git commit -m "Squashed commit" If you want to start editing the new co... | <p>You can do this fairly easily without <code>git rebase</code> or <code>git merge --squash</code>. In this example, we'll squash the last 3 commits:</p>
<pre class="lang-sh prettyprint-override"><code>git reset --soft HEAD~3
</code></pre>
<p>If you also want to write the new commit message from scratch, this suffice... | null | null |
176921 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/176921 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 176,918 | null | 6,115 | null | null | null | null | null | 2008-10-07T01:40:49 | 2023-01-02T16:49:23 | Alex Coventry | null | CC BY-SA 4.0 | null | 1,941,213 | 71,343 | null | null | null | null | null | null | null | null | null | null | null | null | null | 176,921 | true | >>> ["foo", "bar", "baz"].index("bar") 1 See the documentation for the built-in .index() method of the list: list.index(x[, start[, end]]) Return zero-based index in the list of the first item whose value is equal to x . Raises a ValueError if there is no such item. The optional arguments start and end are interpreted ... | <pre class="lang-py prettyprint-override"><code>>>> ["foo", "bar", "baz"].index("bar")
1
</code></pre>
<p>See <a href="https://docs.python.org/tutorial/datastructures.html#more-on-lists" rel="noreferrer">the documentation</a> for the built-in <code>.index()</code> method... | null | null |
7572252 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/7572252 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 4,181,861 | null | 6,103 | null | null | null | null | null | 2011-09-27T16:07:11 | 2024-10-30T17:45:58 | baisong | null | CC BY-SA 4.0 | null | 581,625 | 61,334 | null | null | null | null | null | null | null | null | null | null | null | null | null | 7,572,252 | false | Maybe you just need to commit. I ran into this when I did: mkdir repo && cd repo git init git remote add origin /path/to/origin.git git add . Oops! Never committed! git push -u origin master error: src refspec master does not match any. All I had to do was: git commit -m "initial commit" git push origin main Success! | <p>Maybe you just need to commit. I ran into this when I did:</p>
<pre class="lang-bash prettyprint-override"><code>mkdir repo && cd repo
git init
git remote add origin /path/to/origin.git
git add .
</code></pre>
<p>Oops! Never committed!</p>
<pre><code>git push -u origin master
error: src refspec master does n... | null | null |
5195913 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/5195913 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 5,195,859 | null | 6,062 | null | null | null | null | null | 2011-03-04T15:40:30 | 2024-04-24T21:55:14 | Trevor | null | CC BY-SA 4.0 | null | 207,162 | 61,883 | null | null | null | null | null | null | null | null | null | null | null | null | null | 5,195,913 | false | To push a single tag: git push origin tag <tag_name> And the following command should push all tags ( not recommended ): # not recommended git push --tags | <p>To push a <strong>single</strong> tag:</p>
<pre><code>git push origin tag <tag_name>
</code></pre>
<p>And the following command should push <strong>all</strong> tags (<strong>not recommended</strong>):</p>
<pre><code># not recommended
git push --tags
</code></pre>
| null | null |
29973358 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/29973358 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 29,973,357 | null | 6,023 | null | null | null | null | null | 2015-04-30T16:43:35 | 2026-01-13T20:46:30 | npc2b | null | CC BY-SA 4.0 | null | 1,730,061 | 71,593 | null | null | null | null | null | null | null | null | null | null | null | null | null | 29,973,358 | true | The code formatting is available in Visual Studio Code through the following shortcuts: On Windows Shift + Alt + F On Mac Shift + Option + F On Linux Ctrl + Shift + I Alternatively, you can find the shortcut, as well as other shortcuts, through the submenu View / Command Palette , also provided in the editor with Ctrl ... | <p>The code formatting is available in Visual Studio Code through the following shortcuts:</p>
<ul>
<li>On Windows <kbd>Shift</kbd> + <kbd>Alt</kbd> + <kbd>F</kbd></li>
<li>On Mac <kbd>Shift</kbd> + <kbd>Option</kbd> + <kbd>F</kbd></li>
<li>On Linux <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>I</kbd></li>
</ul>
<p>Altern... | null | null |
122704 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/122704 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 122,102 | null | 6,002 | null | null | null | null | null | 2008-09-23T18:09:37 | 2024-05-21T22:56:53 | John Resig | null | CC BY-SA 4.0 | null | 6,524 | 36,591 | null | null | null | null | null | null | null | null | null | null | null | null | null | 122,704 | true | Native deep cloning There's now a structuredClone(value) function supported in all major browsers and node >= 17. It has polyfills for older systems . structuredClone(value) If needed, loading the polyfill first: import structuredClone from '@ungap/structured-clone'; See this answer for more details, but note these lim... | <h1>Native deep cloning</h1>
<p>There's now a <a href="https://developer.mozilla.org/en-US/docs/Web/API/structuredClone" rel="noreferrer"><code>structuredClone(value)</code></a> function supported in all major browsers and node >= 17. It has <a href="https://www.npmjs.com/package/@ungap/structured-clone" rel="norefe... | null | null |
89243 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/89243 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 89,228 | null | 5,978 | null | null | null | null | null | 2008-09-18T01:39:35 | 2023-05-19T23:52:54 | David Cournapeau | null | CC BY-SA 4.0 | null | 11,465 | 81,296 | null | null | null | null | null | null | null | null | null | null | null | null | null | 89,243 | true | Use subprocess.run : import subprocess subprocess.run(["ls", "-l"]) Another common way is os.system but you shouldn't use it because it is unsafe if any parts of the command come from outside your program or can contain spaces or other special characters, also subprocess.run is generally more flexible (you can get the ... | <p>Use <a href="https://docs.python.org/library/subprocess.html#subprocess.run" rel="noreferrer"><code>subprocess.run</code></a>:</p>
<pre class="lang-py prettyprint-override"><code>import subprocess
subprocess.run(["ls", "-l"])
</code></pre>
<p>Another common way is <a href="https://docs.python.o... | null | null |
46908 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/46908 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 46,898 | null | 5,965 | null | null | null | null | null | 2008-09-05T21:15:52 | 2021-07-07T11:50:48 | ScArcher2 | null | CC BY-SA 4.0 | null | 1,310 | 87,543 | null | null | null | null | null | null | null | null | null | null | null | null | null | 46,908 | true | Map<String, String> map = ... for (Map.Entry<String, String> entry : map.entrySet()) { System.out.println(entry.getKey() + "/" + entry.getValue()); } On Java 10+: for (var entry : map.entrySet()) { System.out.println(entry.getKey() + "/" + entry.getValue()); } | <pre class="lang-java prettyprint-override"><code>Map<String, String> map = ...
for (Map.Entry<String, String> entry : map.entrySet()) {
System.out.println(entry.getKey() + "/" + entry.getValue());
}
</code></pre>
<p>On Java 10+:</p>
<pre class="lang-java prettyprint-override"><code>for (var e... | null | null |
252711 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/252711 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 252,703 | null | 5,933 | null | null | null | null | null | 2008-10-31T06:02:25 | 2024-04-24T20:34:06 | kender | null | CC BY-SA 4.0 | null | 4,172 | 87,601 | null | null | null | null | null | null | null | null | null | null | null | null | null | 252,711 | true | .append() appends a single object at the end of the list: >>> x = [1, 2, 3] >>> x.append([4, 5]) >>> print(x) [1, 2, 3, [4, 5]] .extend() appends multiple objects that are taken from inside the specified iterable: >>> x = [1, 2, 3] >>> x.extend([4, 5]) >>> print(x) [1, 2, 3, 4, 5] | <p><a href="https://docs.python.org/3/library/stdtypes.html#mutable-sequence-types" rel="noreferrer"><code>.append()</code></a> appends a <strong>single object</strong> at the end of the list:</p>
<pre><code>>>> x = [1, 2, 3]
>>> x.append([4, 5])
>>> print(x)
[1, 2, 3, [4, 5]]
</code></pre>
<... | null | null |
7173011 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/7173011 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 7,172,784 | null | 5,892 | null | null | null | null | null | 2011-08-24T09:12:29 | 2023-03-29T18:43:53 | Sean Patrick Floyd | null | CC BY-SA 4.0 | null | 342,852 | 301,057 | null | null | null | null | null | null | null | null | null | null | null | null | null | 7,173,011 | true | You need to set your content-type to application/json. But -d (or --data ) sends the Content-Type application/x-www-form-urlencoded by default, which is not accepted on Spring's side. Looking at the curl man page , I think you can use -H (or --header ): -H "Content-Type: application/json" Full example: curl --header "C... | <p>You need to set your content-type to application/json. But <a href="https://curl.haxx.se/docs/manpage.html#-d" rel="noreferrer"><code>-d</code></a> (or <code>--data</code>) sends the Content-Type <code>application/x-www-form-urlencoded</code> by default, which is not accepted on Spring's side.</p>
<p>Looking at the ... | null | null |
10335943 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/10335943 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 10,335,747 | null | 5,884 | null | null | null | null | null | 2012-04-26T14:52:40 | 2026-07-15T15:29:56 | Hailei | null | CC BY-SA 4.0 | null | 1,241,690 | 42,133 | null | null | null | null | null | null | null | null | null | null | null | null | null | 10,335,943 | true | You must login to developer.apple before using the links on this page. See Xcode versions at: developer.apple.com/download/all/?q=xcode To install Xcode, download a file below, double-click to unzip, and simply move to the Applications folder. (To have more than one version of Xcode: simply name them differently on the... | <p>You must <a href="https://developer.apple.com/account/" rel="nofollow noreferrer">login</a> to developer.apple before using the links on this page.</p>
<p>See Xcode versions at: <a href="https://developer.apple.com/download/all/?q=xcode" rel="nofollow noreferrer">developer.apple.com/download/all/?q=xcode</a></p>
<p>... | null | null |
606199 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/606199 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 606,191 | null | 5,881 | null | null | null | null | null | 2009-03-03T12:26:18 | 2024-02-05T13:32:31 | Aaron Maenpaa | null | CC BY-SA 4.0 | null | 2,603 | 123,778 | null | null | null | null | null | null | null | null | null | null | null | null | null | 606,199 | true | Decode the bytes object to produce a string: >>> b"abcde".decode("utf-8") 'abcde' The above example assumes that the bytes object is in UTF-8, because it is a common encoding. However, you should use the encoding your data is actually in! | <p><a href="https://docs.python.org/3/library/stdtypes.html#bytes.decode" rel="noreferrer">Decode the <code>bytes</code> object</a> to produce a string:</p>
<pre><code>>>> b"abcde".decode("utf-8")
'abcde'
</code></pre>
<p>The above example <em>assumes</em> that the <code>bytes</code> object... | null | null |
37576787 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/37576787 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 37,576,685 | null | 5,807 | null | null | null | null | null | 2016-06-01T19:02:09 | 2020-02-08T23:30:30 | Bergi | null | CC BY-SA 4.0 | null | 1,048,572 | 671,974 | null | null | null | null | null | null | null | null | null | null | null | null | null | 37,576,787 | true | Sure the code does work, but I'm pretty sure it doesn't do what you expect it to do. It just fires off multiple asynchronous calls, but the printFiles function does immediately return after that. Reading in sequence If you want to read the files in sequence, you cannot use forEach indeed. Just use a modern for … of loo... | <p>Sure the code does work, but I'm pretty sure it doesn't do what you expect it to do. It just fires off multiple asynchronous calls, but the <code>printFiles</code> function does immediately return after that.</p>
<h3>Reading in sequence</h3>
<p>If you want to read the files in sequence, <strong>you cannot use <cod... | null | null |
1129270 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1129270 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,129,216 | null | 5,804 | null | null | null | null | null | 2009-07-15T03:35:51 | 2022-12-10T22:19:06 | Wogan | null | CC BY-SA 4.0 | null | 137,902 | 73,027 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,129,270 | true | It's easy enough to write your own comparison function: function compare( a, b ) { if ( a.last_nom < b.last_nom ){ return -1; } if ( a.last_nom > b.last_nom ){ return 1; } return 0; } objs.sort( compare ); Or inline ( c/o Marco Demaio ): objs.sort((a,b) => (a.last_nom > b.last_nom) ? 1 : ((b.last_nom > a.last_nom) ? -1... | <p>It's easy enough to write your own comparison function:</p>
<pre><code>function compare( a, b ) {
if ( a.last_nom < b.last_nom ){
return -1;
}
if ( a.last_nom > b.last_nom ){
return 1;
}
return 0;
}
objs.sort( compare );
</code></pre>
<p>Or inline (<a href="https://stackoverflow.com/question... | null | null |
5515349 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/5515349 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 5,515,310 | null | 5,791 | null | null | null | null | null | 2011-04-01T15:17:44 | 2023-02-03T13:12:10 | jAndy | null | CC BY-SA 4.0 | null | 1,386,886 | 236,731 | null | null | null | null | null | null | null | null | null | null | null | null | null | 5,515,349 | true | You can just check if the variable has a truthy value or not. That means if (value) { // do something.. } will evaluate to true if value is not : null undefined NaN empty string ("") 0 false The above list represents all possible falsy values in ECMA-/Javascript. Find it in the specification at the ToBoolean section. F... | <p>You can just check if the <em>variable</em> has a <code>truthy</code> value or not. That means</p>
<pre><code>if (value) {
// do something..
}
</code></pre>
<p>will evaluate to <code>true</code> if <code>value</code> is <strong>not</strong>:</p>
<ul>
<li>null</li>
<li>undefined</li>
<li>NaN</li>
<li>empty string... | null | null |
2117523 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/2117523 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 105,034 | null | 5,766 | null | null | null | null | null | 2010-01-22T13:40:20 | 2024-03-23T17:11:44 | broofa | null | CC BY-SA 4.0 | null | 109,538 | 38,371 | null | null | null | null | null | null | null | null | null | null | null | null | null | 2,117,523 | false | [Edited 2023-03-05 to reflect latest best-practices for producing RFC4122-compliant UUIDs] crypto.randomUUID() is now standard on all modern browsers and JS runtimes. However, because new browser APIs are restricted to secure contexts , this method is only available to pages served locally ( localhost or 127.0.0.1 ) or... | <p><em>[Edited 2023-03-05 to reflect latest best-practices for producing RFC4122-compliant UUIDs]</em></p>
<p><a href="https://developer.mozilla.org/en-US/docs/Web/API/Crypto/randomUUID" rel="noreferrer"><code>crypto.randomUUID()</code></a> is now standard on all modern browsers and JS runtimes. However, because <a hr... | null | null |
1338744 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1338744 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,338,728 | null | 5,742 | null | null | null | null | null | 2009-08-27T03:44:04 | 2024-03-30T21:31:37 | gahooa | null | CC BY-SA 4.0 | null | 64,004 | 138,710 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,338,744 | true | Careful: git reset --hard WILL DELETE YOUR WORKING DIRECTORY CHANGES . Be sure to stash any local changes you want to keep before running this command. Assuming you are sitting on that commit, then this command will wack it... git reset --hard HEAD~1 The HEAD~1 means the commit before head. Or, you could look at the ou... | <p><strong>Careful:</strong> <code>git reset --hard</code> <strong>WILL DELETE YOUR WORKING DIRECTORY CHANGES</strong>.
Be sure to <strong>stash any local changes you want to keep</strong> before running this command.</p>
<p>Assuming you are sitting on that commit, then this command will wack it...</p>
<pre class="lang... | null | null |
1602964 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1602964 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,602,934 | null | 5,730 | null | null | null | null | null | 2009-10-21T19:10:21 | 2023-03-07T14:12:21 | Chris B. | null | CC BY-SA 4.0 | null | 9,161 | 91,410 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,602,964 | true | in tests for the existence of a key in a dict : d = {"key1": 10, "key2": 23} if "key1" in d: print("this will execute") if "nonexistent key" in d: print("this will not") Use dict.get() to provide a default value when the key does not exist: d = {} for i in range(100): key = i % 10 d[key] = d.get(key, 0) + 1 To provide ... | <p><a href="https://docs.python.org/reference/expressions.html#membership-test-operations" rel="noreferrer"><code>in</code></a> tests for the existence of a key in a <a href="https://docs.python.org/library/stdtypes.html#dict" rel="noreferrer"><code>dict</code></a>:</p>
<pre><code>d = {"key1": 10, "key2&... | null | null |
1232046 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1232046 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,232,040 | null | 5,714 | null | null | null | null | null | 2009-08-05T09:10:00 | 2022-12-09T19:08:32 | Philippe Leybaert | null | CC BY-SA 4.0 | null | 113,570 | 172,490 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,232,046 | true | Ways to clear an existing array A : Method 1 (this was my original answer to the question) A = []; This code will set the variable A to a new empty array. This is perfect if you don't have references to the original array A anywhere else because this actually creates a brand new (empty) array. You should be careful wit... | <p>Ways to clear an existing array <code>A</code>:</p>
<p><strong>Method 1</strong></p>
<p>(this was my original answer to the question)</p>
<pre><code>A = [];
</code></pre>
<p>This code will set the variable <code>A</code> to a new empty array. This is perfect if you don't have <strong>references to the original array... | null | null |
39914235 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/39914235 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 951,021 | null | 5,705 | null | null | null | null | null | 2016-10-07T09:44:56 | 2024-04-03T12:16:53 | Dan Dascalescu | null | CC BY-SA 4.0 | null | 1,269,037 | 154,165 | null | null | null | null | null | null | null | null | null | null | null | null | null | 39,914,235 | true | 2017 — 2021 update Since 2009 when this question was asked, JavaScript has evolved significantly. All other answers are now obsolete or overly complicated. Here is the current best practice: function sleep(ms) { return new Promise(resolve => setTimeout(resolve, ms)); } Or as a one-liner: await new Promise(r => setTimeo... | <h2>2017 — 2021 update</h2>
<p>Since 2009 when this question was asked, JavaScript has evolved significantly. All other answers are now obsolete or overly complicated. Here is the current best practice:</p>
<pre><code>function sleep(ms) {
return new Promise(resolve => setTimeout(resolve, ms));
}
</code></pre>
<p... | null | null |
1143800 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1143800 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,143,796 | null | 5,689 | null | null | null | null | null | 2009-07-17T14:57:26 | 2022-07-25T05:07:20 | bdonlan | null | CC BY-SA 4.0 | null | 36,723 | 233,819 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,143,800 | true | The git rm documentation states: When --cached is given, the staged content has to match either the tip of the branch or the file on disk, allowing the file to be removed from just the index. So, for a single file: git rm --cached file_to_remove.txt and for a single directory: git rm --cached -r directory_to_remove | <p>The <a href="https://git-scm.com/docs/git-rm" rel="noreferrer"><code>git rm</code></a> documentation states:</p>
<blockquote>
<p>When <code>--cached</code> is given, the staged content has to match either the tip of the branch or the file on disk, allowing the file to be removed from just the index.</p>
</blockquote... | null | null |
12142066 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/12142066 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 6,245,570 | null | 5,655 | null | null | null | null | null | 2012-08-27T12:33:46 | 2022-07-08T06:42:20 | Jistanidiot | null | CC BY-SA 4.0 | null | 1,426,193 | 57,352 | null | null | null | null | null | null | null | null | null | null | null | null | null | 12,142,066 | false | To display only the name of the current branch you're on: git rev-parse --abbrev-ref HEAD Reference: Show just the current branch in Git | <p>To display <em>only</em> the name of the current branch you're on:</p>
<pre><code>git rev-parse --abbrev-ref HEAD
</code></pre>
<p>Reference: <a href="https://stackoverflow.com/a/1418022/367456">Show just the current branch in Git</a></p>
| null | null |
2389423 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/2389423 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 2,389,361 | null | 5,647 | null | null | null | null | null | 2010-03-05T19:34:01 | 2018-11-30T02:00:37 | Marcin Gil | null | CC BY-SA 4.0 | null | 5,731 | 70,141 | null | null | null | null | null | null | null | null | null | null | null | null | null | 2,389,423 | true | With git reflog check which commit is one prior the merge ( git reflog will be a better option than git log ). Then you can reset it using: git reset --hard commit_sha There's also another way: git reset --hard HEAD~1 It will get you back 1 commit. Be aware that any modified and uncommitted/unstashed files will be rese... | <p>With <code>git reflog</code> check which commit is one prior the merge (<code>git reflog</code> will be a better option than <code>git log</code>). Then you can reset it using:</p>
<pre><code>git reset --hard commit_sha
</code></pre>
<p>There's also another way:</p>
<pre><code>git reset --hard HEAD~1
</code></pre... | null | null |
1720432 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1720432 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,720,421 | null | 5,641 | null | null | null | null | null | 2009-11-12T07:07:06 | 2024-01-10T20:15:51 | Daniel G | null | CC BY-SA 4.0 | null | 207,432 | 70,342 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,720,432 | true | Use the + operator to combine the lists: listone = [1, 2, 3] listtwo = [4, 5, 6] joinedlist = listone + listtwo Output: >>> joinedlist [1, 2, 3, 4, 5, 6] NOTE: This will create a new list with a shallow copy of the items in the first list, followed by a shallow copy of the items in the second list. Use copy.deepcopy() ... | <p>Use the <code>+</code> operator to combine the lists:</p>
<pre><code>listone = [1, 2, 3]
listtwo = [4, 5, 6]
joinedlist = listone + listtwo
</code></pre>
<p>Output:</p>
<pre><code>>>> joinedlist
[1, 2, 3, 4, 5, 6]
</code></pre>
<p>NOTE: This will create a new list with a shallow copy of the items in the fi... | null | null |
638980 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/638980 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 638,975 | null | 5,625 | null | null | null | null | null | 2009-03-12T14:50:01 | 2022-07-17T00:26:03 | John Feminella | null | CC BY-SA 4.0 | null | 75,170 | 313,968 | null | null | null | null | null | null | null | null | null | null | null | null | null | 638,980 | true | The test command (written as [ here) has a "not" logical operator, ! (exclamation mark): if [ ! -f /tmp/foo.txt ]; then echo "File not found!" fi | <p>The <a href="http://man7.org/linux/man-pages/man1/test.1.html" rel="noreferrer"><code>test</code></a> command (written as <code>[</code> here) has a "not" logical operator, <code>!</code> (exclamation mark):</p>
<pre><code>if [ ! -f /tmp/foo.txt ]; then
echo "File not found!"
fi
</code></pre>... | null | null |
336868 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/336868 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 336,859 | null | 5,623 | null | null | null | null | null | 2008-12-03T11:37:42 | 2024-04-23T15:08:21 | Greg | null | CC BY-SA 4.0 | null | 24,181 | 323,122 | null | null | null | null | null | null | null | null | null | null | null | null | null | 336,868 | true | The difference is that functionOne is a function expression and so only defined when that line is reached, whereas functionTwo is a function declaration and is defined as soon as its surrounding function or script is executed (due to hoisting ). For example, a function expression: // TypeError: functionOne is not a fun... | <p>The difference is that <code>functionOne</code> is a <strong>function expression</strong> and so only defined when that line is reached, whereas <code>functionTwo</code> is a <strong>function declaration</strong> and is defined as soon as its surrounding function or script is executed (due to <a href="http://adripof... | null | null |
1098955 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1098955 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,098,040 | null | 5,620 | null | null | null | null | null | 2009-07-08T15:51:10 | 2021-10-16T13:44:29 | Ateş Göral | null | CC BY-SA 4.0 | null | 23,501 | 140,640 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,098,955 | true | Checking for undefined-ness is not an accurate way of testing whether a key exists. What if the key exists but the value is actually undefined ? var obj = { key: undefined }; console.log(obj["key"] !== undefined); // false, but the key exists! You should instead use the in operator: var obj = { key: undefined }; consol... | <p>Checking for undefined-ness is not an accurate way of testing whether a key exists. What if the key exists but the value is actually <code>undefined</code>?</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js la... | null | null |
114549 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/114549 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 114,543 | null | 5,591 | null | null | null | null | null | 2008-09-22T12:29:07 | 2023-01-17T15:23:48 | Justin Poliey | null | CC BY-SA 4.0 | null | 6,967 | 16,341 | null | null | null | null | null | null | null | null | null | null | null | null | null | 114,549 | true | With flexbox it is very easy to style the div horizontally and vertically centered. #inner { border: 0.05em solid black; } #outer { border: 0.05em solid red; width:100%; display: flex; justify-content: center; } <div id="outer"> <div id="inner">Foo foo</div> </div> To align the div vertically centered, use the property... | <p>With <code>flexbox</code> it is very easy to style the div horizontally and vertically centered.</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="false" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-css lang-css prettyprint-override"><code>#inner {
border: 0.... | null | null |
11832950 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/11832950 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 11,832,914 | null | 5,571 | null | null | null | null | null | 2012-08-06T17:20:31 | 2021-08-27T03:20:23 | Brian Ustas | null | CC BY-SA 4.0 | null | 1,575,238 | 66,105 | null | null | null | null | null | null | null | null | null | null | null | null | null | 11,832,950 | true | Use Math.round() : Math.round(num * 100) / 100 Or to be more specific and to ensure things like 1.005 round correctly, use Number.EPSILON : Math.round((num + Number.EPSILON) * 100) / 100 | <p>Use <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/round" rel="noreferrer"><code>Math.round()</code></a> :</p>
<pre><code>Math.round(num * 100) / 100
</code></pre>
<p>Or to be more specific and to ensure things like 1.005 round correctly, use <a href="https://developer... | null | null |
1473742 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1473742 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 237,104 | null | 5,535 | null | null | null | null | null | 2009-09-24T19:35:24 | 2023-05-30T11:08:02 | codeape | null | CC BY-SA 4.0 | null | 3,571 | 101,730 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,473,742 | true | Modern browsers have Array#includes , which does exactly that and is widely supported by everyone except IE: console.log(['joe', 'jane', 'mary'].includes('jane')); // true You can also use Array#indexOf , which is less direct, but doesn't require polyfills for outdated browsers. console.log(['joe', 'jane', 'mary'].inde... | <p>Modern browsers have <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/includes#browser_compatibility" rel="noreferrer"><code>Array#includes</code></a>, which does <em>exactly</em> that and <a href="https://kangax.github.io/compat-table/es2016plus/#test-Array.prototype.i... | null | null |
1335881 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1335881 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,335,851 | null | 5,529 | null | null | null | null | null | 2009-08-26T16:15:39 | 2023-03-12T15:07:59 | Pascal MARTIN | null | CC BY-SA 4.0 | null | 138,475 | 402,156 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,335,881 | true | Update for ES6 modules Inside native ECMAScript modules (with import and export statements) and ES6 classes , strict mode is always enabled and cannot be disabled. Original answer This article about Javascript Strict Mode might interest you: John Resig - ECMAScript 5 Strict Mode, JSON, and More To quote some interestin... | <h2>Update for ES6 modules</h2>
<p>Inside <a href="https://caniuse.com/#feat=es6-module" rel="noreferrer">native ECMAScript modules</a> (with <a href="https://developer.mozilla.org/docs/Web/JavaScript/Reference/Statements/import" rel="noreferrer"><code>import</code></a> and <a href="https://developer.mozilla.org/docs/W... | null | null |
16476974 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/16476974 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 16,476,924 | null | 5,527 | null | null | null | null | null | 2013-05-10T07:07:58 | 2026-02-20T00:28:28 | waitingkuo | null | CC BY-SA 4.0 | null | 1,426,056 | 94,680 | null | null | null | null | null | null | null | null | null | null | null | null | null | 16,476,974 | true | DataFrame.iterrows is a generator which yields both the index and row (as a Series): import pandas as pd df = pd.DataFrame({'c1': [10, 11, 12], 'c2': [100, 110, 120]}) df = df.reset_index() # Make sure indexes pair with number of rows for index, row in df.iterrows(): print(row['c1'], row['c2']) 10 100 11 110 12 120 Obl... | <p><a href="https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.iterrows.html#pandas-dataframe-iterrows" rel="noreferrer"><code>DataFrame.iterrows</code></a> is a generator which yields both the index and row (as a Series):</p>
<pre><code>import pandas as pd
df = pd.DataFrame({'c1': [10, 11, 12... | null | null |
7244456 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/7244456 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 7,244,321 | null | 5,525 | null | null | null | null | null | 2011-08-30T14:01:26 | 2024-05-24T02:45:09 | Mark Longair | null | CC BY-SA 4.0 | null | 223,092 | 473,915 | null | null | null | null | null | null | null | null | null | null | null | null | null | 7,244,456 | true | In your local clone of your forked repository, you can add the original GitHub repository as a "remote". ("Remotes" are like nicknames for the URLs of repositories - origin is one, for example.) Then you can fetch all the branches from that upstream repository, and rebase your work to continue working on the upstream v... | <p>In your local clone of your forked repository, you can add the original GitHub repository as a "remote". ("Remotes" are like nicknames for the URLs of repositories - <code>origin</code> is one, for example.) Then you can fetch all the branches from that upstream repository, and rebase your work... | null | null |
2068371 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/2068371 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 2,068,344 | null | 5,490 | null | null | null | null | null | 2010-01-14T23:40:25 | 2019-07-10T21:45:11 | Asaph | null | CC BY-SA 4.0 | null | 166,339 | 163,711 | null | null | null | null | null | null | null | null | null | null | null | null | null | 2,068,371 | true | Each YouTube video has four generated images. They are predictably formatted as follows: https://img.youtube.com/vi/<insert-youtube-video-id-here>/0.jpg https://img.youtube.com/vi/<insert-youtube-video-id-here>/1.jpg https://img.youtube.com/vi/<insert-youtube-video-id-here>/2.jpg https://img.youtube.com/vi/<insert-yout... |
<p>Each YouTube video has four generated images. They are predictably formatted as follows:</p>
<pre class="lang-none prettyprint-override"><code>https://img.youtube.com/vi/<insert-youtube-video-id-here>/0.jpg
https://img.youtube.com/vi/<insert-youtube-video-id-here>/1.jpg
https://img.youtube.com/vi/<... | null | null |
950146 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/950146 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 950,087 | null | 5,485 | null | null | null | null | null | 2009-06-04T12:13:28 | 2022-09-19T09:18:22 | Bite code | null | CC BY-SA 4.0 | null | 9,951 | 601,871 | null | null | null | null | null | null | null | null | null | null | null | null | null | 950,146 | true | The old versions of JavaScript had no import, include, or require, so many different approaches to this problem have been developed. But since 2015 (ES6), JavaScript has had the ES6 modules standard to import modules in Node.js, which is also supported by most modern browsers . For compatibility with older browsers, bu... | <p>The old versions of JavaScript had no import, include, or require, so many different approaches to this problem have been developed.</p>
<p>But since 2015 (ES6), JavaScript has had the <a href="http://exploringjs.com/es6/ch_modules.html" rel="noreferrer">ES6 modules</a> standard to import modules in Node.js, which i... | null | null |
9270753 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/9270753 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 9,270,734 | null | 5,472 | null | null | null | null | null | 2012-02-14T02:05:01 | 2022-06-14T04:31:29 | quickshiftin | null | CC BY-SA 4.0 | null | 680,920 | 70,559 | null | null | null | null | null | null | null | null | null | null | null | null | null | 9,270,753 | true | The keys need to be read-writable only by you: chmod 600 ~/.ssh/id_rsa Alternatively, the keys can be only readable by you (this also blocks your write access): chmod 400 ~/.ssh/id_rsa 600 appears to be better in most cases, because you don't need to change file permissions later to edit it. (See the comments for more ... | <p>The keys need to be read-writable only by you:</p>
<pre><code>chmod 600 ~/.ssh/id_rsa
</code></pre>
<p>Alternatively, the keys can be only readable by you (this also blocks your write access):</p>
<pre><code>chmod 400 ~/.ssh/id_rsa
</code></pre>
<p><code>600</code> appears to be better in most cases, because you don... | null | null |
351421 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/351421 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 351,409 | null | 5,430 | null | null | null | null | null | 2008-12-09T00:24:28 | 2024-09-25T10:42:20 | jdecuyper | null | CC BY-SA 4.0 | null | 296 | 3,963 | null | null | null | null | null | null | null | null | null | null | null | null | null | 351,421 | true | Use the Array.prototype.push method to append values to the end of an array: // initialize array var arr = [ "Hi", "Hello", "Bonjour" ]; // append new value to the array arr.push("Hola"); console.log(arr); You can use the push() function to append more than one value to an array in a single call: // initialize array va... | <p>Use the <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/push" rel="noreferrer"><code>Array.prototype.push</code></a> method to append values to the end of an array:</p>
<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<d... | null | null |
1066607 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1066607 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,066,589 | null | 5,421 | null | null | null | null | null | 2009-06-30T23:28:27 | 2019-10-17T21:25:25 | harto | null | CC BY-SA 4.0 | null | 86,463 | 90,653 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,066,607 | false | If you're only interested in the keys, you can iterate through the keySet() of the map: Map<String, Object> map = ...; for (String key : map.keySet()) { // ... } If you only need the values, use values() : for (Object value : map.values()) { // ... } Finally, if you want both the key and value, use entrySet() : for (Ma... | <p>If you're only interested in the keys, you can iterate through the <a href="https://docs.oracle.com/javase/1.5.0/docs/api/java/util/Map.html#keySet%28%29" rel="noreferrer"><code>keySet()</code></a> of the map:</p>
<pre><code>Map<String, Object> map = ...;
for (String key : map.keySet()) {
// ...
}
</code... | null | null |
9083 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/9083 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 9,081 | null | 5,416 | null | null | null | null | null | 2008-08-12T17:57:43 | 2017-09-21T08:33:54 | Pat Notz | null | CC BY-SA 3.0 | null | 825 | 216,352 | null | null | null | null | null | null | null | null | null | null | null | null | null | 9,083 | true | For BSD or GNU grep you can use -B num to set how many lines before the match and -A num for the number of lines after the match. grep -B 3 -A 2 foo README.txt If you want the same number of lines before and after you can use -C num . grep -C 3 foo README.txt This will show 3 lines before and 3 lines after. | <p>For <strong>BSD</strong> or <strong>GNU</strong> <code>grep</code> you can use <code>-B num</code> to set how many lines before the match and <code>-A num</code> for the number of lines after the match.</p>
<pre><code>grep -B 3 -A 2 foo README.txt
</code></pre>
<p>If you want the same number of lines before and af... | null | null |
3042512 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/3042512 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 3,042,437 | null | 5,365 | null | null | null | null | null | 2010-06-15T04:31:46 | 2020-04-03T10:25:31 | Amber | null | CC BY-SA 4.0 | null | 148,870 | 533,281 | null | null | null | null | null | null | null | null | null | null | null | null | null | 3,042,512 | true | Interactive rebase off of a point earlier in the history than the commit you need to modify ( git rebase -i <earliercommit> ). In the list of commits being rebased, change the text from pick to edit next to the hash of the one you want to modify. Then when git prompts you to change the commit, use this: git commit --am... | <p>Interactive rebase off of a point earlier in the history than the commit you need to modify (<code>git rebase -i <earliercommit></code>). In the list of commits being rebased, change the text from <code>pick</code> to <code>edit</code> next to the hash of the one you want to modify. Then when git prompts you t... | null | null |
105402 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/105402 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 105,372 | null | 5,325 | null | null | null | null | null | 2008-09-19T20:37:18 | 2026-03-20T17:02:28 | jop | null | CC BY-SA 4.0 | null | 11,830 | 84,205 | null | null | null | null | null | null | null | null | null | null | null | null | null | 105,402 | true | If you're using .NET 5 or newer, use this solution . foreach (Suit suit in (Suit[]) Enum.GetValues(typeof(Suit))) { } Note : The cast to (Suit[]) is not strictly necessary, but it does make the code 0.5 ns faster . | <p>If you're using .NET 5 or newer, use <a href="https://stackoverflow.com/questions/105372/how-to-enumerate-an-enum#65103244">this solution</a>.</p>
<pre><code>foreach (Suit suit in (Suit[]) Enum.GetValues(typeof(Suit)))
{
}
</code></pre>
<p><strong>Note</strong>: The cast to <code>(Suit[])</code> is not strictly nece... | null | null |
3010848 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/3010848 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 3,010,840 | null | 5,294 | null | null | null | null | null | 2010-06-10T00:07:12 | 2021-05-29T04:15:02 | Christian C. Salvadó | null | CC BY-SA 4.0 | null | 5,445 | 832,348 | null | null | null | null | null | null | null | null | null | null | null | null | null | 3,010,848 | false | Three main options: for (var i = 0; i < xs.length; i++) { console.log(xs[i]); } xs.forEach((x, i) => console.log(x)); for (const x of xs) { console.log(x); } Detailed examples are below. 1. Sequential for loop: var myStringArray = ["Hello","World"]; var arrayLength = myStringArray.length; for (var i = 0; i < arrayLengt... | <p>Three main options:</p>
<ol>
<li><code>for (var i = 0; i < xs.length; i++) { console.log(xs[i]); }</code></li>
<li><code>xs.forEach((x, i) => console.log(x));</code></li>
<li><code>for (const x of xs) { console.log(x); }</code></li>
</ol>
<p>Detailed examples are below.</p>
<hr />
<h1>1. Sequential <code>for</... | null | null |
423596 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/423596 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 423,379 | null | 5,291 | null | null | null | null | null | 2009-01-08T08:39:44 | 2023-03-05T02:17:44 | Paul Stephenson | null | CC BY-SA 4.0 | null | 5,536 | 69,860 | null | null | null | null | null | null | null | null | null | null | null | null | null | 423,596 | true | You can use a global variable within other functions by declaring it as global within each function that assigns a value to it : globvar = 0 def set_globvar_to_one(): global globvar # Needed to modify global copy of globvar globvar = 1 def print_globvar(): print(globvar) # No need for global declaration to read value o... | <p>You can use a global variable within other functions by declaring it as <code>global</code> <strong>within each function that assigns a value to it</strong>:</p>
<pre><code>globvar = 0
def set_globvar_to_one():
global globvar # Needed to modify global copy of globvar
globvar = 1
def print_globvar():
... | null | null |
6470452 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/6470452 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 6,470,428 | null | 5,287 | null | null | null | null | null | 2011-06-24T15:56:34 | 2026-07-04T23:10:27 | mechanical_meat | null | CC BY-SA 4.0 | null | 42,346 | 170,952 | null | null | null | null | null | null | null | null | null | null | null | null | null | 6,470,452 | true | From Python Documentation : An except clause may name multiple exceptions as a parenthesized tuple, for example except (IDontLikeYouException, YouAreBeingMeanException) as e: pass Or, for Python 2 only: except (IDontLikeYouException, YouAreBeingMeanException), e: pass Separating the exception from the variable with a c... | <p>From <a href="https://docs.python.org/3/tutorial/errors.html#handling-exceptions" rel="nofollow noreferrer">Python Documentation</a>:</p>
<blockquote>
<p>An except clause may name multiple exceptions as a parenthesized tuple, for example</p>
</blockquote>
<pre><code>except (IDontLikeYouException, YouAreBeingMeanExce... | null | null |
932982 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/932982 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 115,983 | null | 5,259 | null | null | null | null | null | 2009-05-31T22:10:40 | 2018-11-20T11:59:59 | Jamie Flournoy | null | CC BY-SA 4.0 | null | 115,218 | 54,631 | null | null | null | null | null | null | null | null | null | null | null | null | null | 932,982 | true | Another way to make a directory stay (almost) empty (in the repository) is to create a .gitignore file inside that directory that contains these four lines: # Ignore everything in this directory * # Except this file !.gitignore Then you don't have to get the order right the way that you have to do in m104's solution . ... | <p>Another way to make a directory stay (almost) empty (in the repository) is to create a <code>.gitignore</code> file inside that directory that contains these four lines:</p>
<pre><code># Ignore everything in this directory
*
# Except this file
!.gitignore
</code></pre>
<p>Then you don't have to get the order right... | null | null |
1144788 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1144788 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,144,783 | null | 5,258 | null | null | null | null | null | 2009-07-17T17:54:49 | 2024-07-10T15:13:23 | user21926 | null | CC BY-SA 4.0 | null | null | null | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,144,788 | false | As of August 2020: Modern browsers have support for the String.replaceAll() method defined by the ECMAScript 2021 language specification. For older/legacy browsers: function escapeRegExp(str) { return str.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string } function replaceAll(str, find, repla... | <p><strong>As of August 2020:</strong> <a href="https://www.caniuse.com/mdn-javascript_builtins_string_replaceall" rel="noreferrer">Modern browsers have support</a> for the <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/replaceAll" rel="noreferrer"><code>String.replaceA... | null | null |
6937030 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/6937030 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 3,297,048 | null | 5,244 | null | null | null | null | null | 2011-08-04T06:24:41 | 2022-07-21T17:42:26 | JPReddy | null | CC BY-SA 4.0 | null | 305,818 | 66,303 | null | null | null | null | null | null | null | null | null | null | null | null | null | 6,937,030 | true | A clear explanation from Daniel Irvine [ original link ] : There's a problem with 401 Unauthorized , the HTTP status code for authentication errors. And that’s just it: it’s for authentication, not authorization. Receiving a 401 response is the server telling you, “you aren’t authenticated–either not authenticated at a... | <p>A clear explanation from <a href="http://web.archive.org/web/20190904190534/https://www.dirv.me/blog/2011/07/18/understanding-403-forbidden/index.html" rel="noreferrer">Daniel Irvine</a> <sup>[<a href="http://www.dirv.me/blog/2011/07/18/understanding-403-forbidden/index.html" rel="noreferrer">original link</a>]</sup... | null | null |
72156 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/72156 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 67,699 | null | 5,233 | null | null | null | null | null | 2008-09-16T13:28:22 | 2022-08-02T22:29:56 | emk | null | CC BY-SA 4.0 | null | 12,089 | 61,068 | null | null | null | null | null | null | null | null | null | null | null | null | null | 72,156 | true | First, clone a remote Git repository and cd into it: $ git clone git://example.com/myproject $ cd myproject Next, look at the local branches in your repository: $ git branch * master But there are other branches hiding in your repository! See these using the -a flag: $ git branch -a * master remotes/origin/HEAD remotes... | <p>First, clone a remote <a href="http://en.wikipedia.org/wiki/Git_%28software%29" rel="noreferrer">Git</a> repository and <a href="http://en.wikipedia.org/wiki/Cd_%28command%29" rel="noreferrer"><code>cd</code></a> into it:</p>
<pre><code>$ git clone git://example.com/myproject
$ cd myproject
</code></pre>
<p>Next, lo... | null | null |
1920585 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1920585 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 352,098 | null | 5,231 | null | null | null | null | null | 2009-12-17T09:48:55 | 2023-11-11T21:10:57 | B Bycroft | null | CC BY-SA 4.0 | null | 233,648 | 3,470 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,920,585 | false | With Python 2.6+ or 3 you can use the json.tool module: echo '{"foo": "lorem", "bar": "ipsum"}' | python -m json.tool or, if the JSON is in a file, you can do: python -m json.tool my_json.json if the JSON is from an internet source such as an API, you can use curl http://my_url/ | python -m json.tool For convenience in... | <p>With Python 2.6+ or 3 you can use the <a href="https://docs.python.org/3/library/json.html#module-json.tool" rel="noreferrer">json.tool</a> module:</p>
<pre class="lang-sh prettyprint-override"><code>echo '{"foo": "lorem", "bar": "ipsum"}' | python -m json.tool
</code></pre>
<... | null | null |
684692 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/684692 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 684,672 | null | 5,195 | null | null | null | null | null | 2009-03-26T06:12:13 | 2022-12-09T10:25:44 | levik | null | CC BY-SA 4.0 | null | 4,465 | 118,275 | null | null | null | null | null | null | null | null | null | null | null | null | null | 684,692 | true | You can use the for-in loop as shown by others. However, you also have to make sure that the key you get is an actual property of an object, and doesn't come from the prototype. Here is the snippet: var p = { "p1": "value1", "p2": "value2", "p3": "value3" }; for (var key in p) { if (p.hasOwnProperty(key)) { console.log... | <p>You can use the <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...in" rel="noreferrer"><code>for-in</code></a> loop as shown by others. However, you also have to make sure that the key you get is an actual property of an object, and doesn't come from the prototype.</p>
<p><s... | null | null |
2610741 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/2610741 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 2,610,497 | null | 5,179 | null | null | null | null | null | 2010-04-09T20:36:56 | 2024-08-30T08:24:27 | fuxia | null | CC BY-SA 4.0 | null | 299,509 | 63,706 | null | null | null | null | null | null | null | null | null | null | null | null | null | 2,610,741 | true | From April 2017: most modern browsers now support the simple pseudo-element ::placeholder [ Ref ] Implementation There are three different implementations: pseudo-elements, pseudo-classes, and nothing. WebKit, Blink (Safari, Google Chrome, Opera 15+) and Microsoft Edge are using a pseudo-element: ::-webkit-input-placeh... | <p><strong>From April 2017: most modern browsers now support the simple pseudo-element <code>::placeholder</code> <sup>[<a href="https://caniuse.com/#feat=css-placeholder" rel="noreferrer">Ref</a>]</sup></strong></p>
<h2>Implementation</h2>
<p>There are three different implementations: pseudo-elements, pseudo-classes, ... | null | null |
157950 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/157950 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 157,944 | null | 5,156 | null | null | null | null | null | 2008-10-01T14:39:12 | 2023-10-14T08:19:49 | Tom | null | CC BY-SA 4.0 | null | 22,850 | 56,471 | null | null | null | null | null | null | null | null | null | null | null | null | null | 157,950 | true | You can use the following instruction: new ArrayList<>(Arrays.asList(array)); | <p>You can use the following instruction:</p>
<pre><code>new ArrayList<>(Arrays.asList(array));
</code></pre>
| null | null |
154068 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/154068 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 154,059 | null | 5,118 | null | null | null | null | null | 2008-09-30T17:20:14 | 2022-07-24T23:33:31 | Brian Dukes | null | CC BY-SA 4.0 | null | 2,688 | 157,007 | null | null | null | null | null | null | null | null | null | null | null | null | null | 154,068 | true | Empty string, undefined, null, ... To check for a truthy value : if (strValue) { // strValue was non-empty string, true, 42, Infinity, [], ... } To check for a falsy value : if (!strValue) { // strValue was empty string, false, 0, null, undefined, ... } Empty string (only!) To check for exactly an empty string, compare... | <h3>Empty string, undefined, null, ...</h3>
<p>To check for a <a href="https://developer.mozilla.org/en-US/docs/Glossary/Truthy" rel="noreferrer">truthy value</a>:</p>
<pre><code>if (strValue) {
// strValue was non-empty string, true, 42, Infinity, [], ...
}
</code></pre>
<p>To check for a <a href="https://develope... | null | null |
1085191 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1085191 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,085,162 | null | 5,108 | null | null | null | null | null | 2009-07-06T02:36:42 | 2022-06-17T17:14:12 | cloudhead | null | CC BY-SA 4.0 | null | 120,146 | 15,383 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,085,191 | true | You can use: git add --patch <filename> or for short: git add -p <filename> Git will break down your file into what it thinks are sensible "hunks" (portions of the file). It will then prompt you with this question: Stage this hunk [y,n,q,a,d,/,j,J,g,s,e,?]? Here is a description of each option: y stage this hunk for th... | <p>You can use:</p>
<pre class="lang-bash prettyprint-override"><code>git add --patch <filename>
</code></pre>
<p>or for short:</p>
<pre class="lang-bash prettyprint-override"><code>git add -p <filename>
</code></pre>
<p>Git will break down your file into what it thinks are sensible "hunks" (porti... | null | null |
264037 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/264037 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 263,965 | null | 5,093 | null | null | null | null | null | 2008-11-05T00:51:02 | 2024-12-09T19:54:05 | guinaps | null | CC BY-SA 4.0 | null | 27,225 | 4,031 | null | null | null | null | null | null | null | null | null | null | null | null | null | 264,037 | true | Do: var isTrueSet = (myValue === 'true'); Use the strict equality operator ( === ), which doesn't make any implicit type conversions when the compared variables have different types. This will set isTrueSet to a boolean true if the string is "true" and boolean false if it is string "false" or not set at all. For making... | <h2>Do:</h2>
<pre class="lang-js prettyprint-override"><code>var isTrueSet = (myValue === 'true');
</code></pre>
<p>Use the strict equality operator (<code>===</code>), which doesn't make any implicit type conversions when the compared variables have different types.</p>
<p>This will set <code>isTrueSet</code> to a boo... | null | null |
52522566 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/52522566 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 52,522,565 | null | 5,072 | null | null | null | null | null | 2018-09-26T16:43:18 | 2023-10-03T14:34:27 | dustbuster | null | CC BY-SA 4.0 | null | 8,221,725 | 82,313 | null | null | null | null | null | null | null | null | null | null | null | null | null | 52,522,566 | true | The problem is that Xcode Command-line Tools needs to be updated due to a MacOs update. Did not run into this on Sonoma. Maybe Apple fixed the process? Updated for Ventura After opening the terminal after restarting, I tried to go to my code, and do a git status , and I got an error and prompt for command line software... | <p>The problem is that Xcode Command-line Tools needs to be updated due to a MacOs update.</p>
<ul>
<li>Did not run into this on Sonoma.
<ul>
<li>Maybe Apple fixed the process?</li>
</ul>
</li>
<li>Updated for Ventura</li>
</ul>
<p>After opening the terminal after restarting, I tried to go to my code, and do a <code>gi... | null | null |
6996628 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/6996628 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 6,996,603 | null | 5,060 | null | null | null | null | null | 2011-08-09T13:07:39 | 2023-10-10T07:04:56 | RichieHindle | null | CC BY-SA 4.0 | null | 21,886 | 284,158 | null | null | null | null | null | null | null | null | null | null | null | null | null | 6,996,628 | true | Use one of these methods: pathlib.Path.unlink() removes a file or symbolic link. pathlib.Path.rmdir() removes an empty directory. shutil.rmtree() deletes a directory and all its contents. On Python 3.3 and below, you can use these methods instead of the pathlib ones: os.remove() removes a file. os.unlink() removes a sy... | <p>Use one of these methods:</p>
<ul>
<li><p><a href="https://docs.python.org/3/library/pathlib.html#pathlib.Path.unlink" rel="noreferrer"><code>pathlib.Path.unlink()</code></a> removes a file or symbolic link.</p>
</li>
<li><p><a href="https://docs.python.org/3/library/pathlib.html#pathlib.Path.rmdir" rel="noreferrer"... | null | null |
3855359 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/3855359 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 3,855,127 | null | 5,054 | null | null | null | null | null | 2010-10-04T12:48:57 | 2024-06-10T05:22:06 | ghostdog74 | null | CC BY-SA 4.0 | null | 131,527 | 347,129 | null | null | null | null | null | null | null | null | null | null | null | null | null | 3,855,359 | true | For macOS El Capitan and newer (or if your netstat doesn't support -p ), use lsof : lsof -i tcp:3000 Alternatively, you can use netstat : netstat -vanp tcp | grep 3000 Once you have the PID (Process ID) use: kill -9 <PID> | <p>For <strong>macOS El Capitan</strong> and newer (or if your netstat doesn't support <code>-p</code>), use <code>lsof</code>:</p>
<pre class="lang-bash prettyprint-override"><code>lsof -i tcp:3000
</code></pre>
<p>Alternatively, you can use <code>netstat</code>:</p>
<pre class="lang-bash prettyprint-override"><code>n... | null | null |
94608 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/94608 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 94,591 | null | 5,050 | null | null | null | null | null | 2008-09-18T17:20:17 | 2018-02-21T01:13:53 | Ben Hoffstein | null | CC BY-SA 3.0 | null | 4,482 | 103,643 | null | null | null | null | null | null | null | null | null | null | null | null | null | 94,608 | true | It's 2,147,483,647. Easiest way to memorize it is via a tattoo. | <p>It's 2,147,483,647. Easiest way to memorize it is via a tattoo.</p>
| null | null |
1260982 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1260982 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,260,748 | null | 5,049 | null | null | null | null | null | 2009-08-11T15:09:16 | 2025-05-15T17:20:13 | John Douthat | null | CC BY-SA 4.0 | null | 2,774 | 41,377 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,260,982 | false | In modern git (I'm writing this in 2022, with an updated git installation), this has become quite a bit simpler: Run git rm <path-to-submodule> , and commit . This removes the filetree at <path-to-submodule> , and the submodule's entry in the .gitmodules file. I.e. all traces of the submodule in your repository proper ... | <p>In modern git (I'm writing this in 2022, with an updated <code>git</code> installation), this has become quite a bit simpler:</p>
<ul>
<li><strong>Run <code>git rm <path-to-submodule></code>, and commit</strong>.</li>
</ul>
<p>This removes the filetree at <code><path-to-submodule></code>, and the submodu... | null | null |
17666279 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/17666279 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 17,666,249 | null | 5,042 | null | null | null | null | null | 2013-07-16T00:48:01 | 2023-01-27T15:46:55 | bansi | null | CC BY-SA 4.0 | null | 2,522,554 | 57,332 | null | null | null | null | null | null | null | null | null | null | null | null | null | 17,666,279 | true | Try: mysql -u username -p database_name < file.sql Check MySQL Options . Note 1: It is better to use the full path of the SQL file file.sql . Note 2: Use -R and --triggers with mysqldump to keep the routines and triggers of the original database. They are not copied by default. Note 3 You may have to create the (empty)... | <p>Try:</p>
<pre><code>mysql -u username -p database_name < file.sql
</code></pre>
<p>Check <a href="http://dev.mysql.com/doc/refman/5.0/en/mysql-command-options.html" rel="noreferrer">MySQL Options</a>.</p>
<p><strong>Note 1:</strong> It is better to use the full path of the SQL file <code>file.sql</code>.</p>
<p><... | null | null |
229606 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/229606 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 229,551 | null | 5,041 | null | null | null | null | null | 2008-10-23T12:55:24 | 2020-04-17T01:20:42 | Adam Bellaire | null | CC BY-SA 4.0 | null | 21,632 | 111,327 | null | null | null | null | null | null | null | null | null | null | null | null | null | 229,606 | true | You can use Marcus's answer (* wildcards) outside a case statement, too, if you use double brackets: string='My long string' if [[ $string == *"My long"* ]]; then echo "It's there!" fi Note that spaces in the needle string need to be placed between double quotes, and the * wildcards should be outside. Also note that a ... | <p>You can use <a href="https://stackoverflow.com/a/229585/3755692">Marcus's answer (* wildcards)</a> outside a case statement, too, if you use double brackets:</p>
<pre><code>string='My long string'
if [[ $string == *"My long"* ]]; then
echo "It's there!"
fi
</code></pre>
<p>Note that spaces in the needle string n... | null | null |
6445794 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/6445794 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 6,441,218 | null | 5,037 | null | null | null | null | null | 2011-06-22T20:01:23 | 2024-04-02T14:12:22 | Eric Lippert | null | CC BY-SA 4.0 | null | 88,656 | 664,522 | null | null | null | null | null | null | null | null | null | null | null | null | null | 6,445,794 | true | How can it be? Isn't the memory of a local variable inaccessible outside its function? You rent a hotel room. You put a book in the top drawer of the bedside table and go to sleep. You check out the next morning, but "forget" to give back your key. You steal the key! A week later, you return to the hotel, do not check ... | <blockquote>
<p>How can it be? Isn't the memory of a local variable inaccessible outside its function?</p>
</blockquote>
<p>You rent a hotel room. You put a book in the top drawer of the bedside table and go to sleep. You check out the next morning, but "forget" to give back your key. You steal the key!</p>
... | null | null |
630475 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/630475 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 630,453 | null | 4,992 | null | null | null | null | null | 2009-03-10T14:29:46 | 2021-04-08T09:47:35 | Brian R. Bondy | null | CC BY-SA 4.0 | null | 3,153 | 349,938 | null | null | null | null | null | null | null | null | null | null | null | null | null | 630,475 | true | Overall: Both PUT and POST can be used for creating. You have to ask, "what are you performing the action upon?", to distinguish what you should be using. Let's assume you're designing an API for asking questions. If you want to use POST, then you would do that to a list of questions. If you want to use PUT, then you w... | <p><strong>Overall:</strong></p>
<p>Both PUT and POST can be used for creating.</p>
<p>You have to ask, "what are you performing the action upon?", to distinguish what you should be using. Let's assume you're designing an API for asking questions. If you want to use POST, then you would do that to a list of ... | null | null |
424142 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/424142 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 424,071 | null | 4,974 | null | null | null | null | null | 2009-01-08T13:02:22 | 2023-02-03T10:33:16 | Ryan McGeary | null | CC BY-SA 4.0 | null | 8,985 | 241,278 | null | null | null | null | null | null | null | null | null | null | null | null | null | 424,142 | true | Preferred Way (because it's a plumbing command; meant to be programmatic): $ git diff-tree --no-commit-id --name-only bd61ad98 -r index.html javascript/application.js javascript/ie6.js Another Way (less preferred for scripts, because it's a porcelain command; meant to be user-facing) $ git show --pretty="" --name-only ... | <p><strong>Preferred Way</strong> (because it's a <em>plumbing</em> command; meant to be programmatic):</p>
<pre><code>$ git diff-tree --no-commit-id --name-only bd61ad98 -r
index.html
javascript/application.js
javascript/ie6.js
</code></pre>
<p><strong>Another Way</strong> (less preferred for scripts, because it's a <... | null | null |
2286030 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/2286030 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 520,650 | null | 4,967 | null | null | null | null | null | 2010-02-18T03:06:52 | 2020-08-21T18:22:38 | Dan Moulding | null | CC BY-SA 4.0 | null | 95,706 | 223,989 | null | null | null | null | null | null | null | null | null | null | null | null | null | 2,286,030 | true | Given a branch foo and a remote upstream : As of Git 1.8.0: git branch -u upstream/foo Or, if local branch foo is not the current branch: git branch -u upstream/foo foo Or, if you like to type longer commands, these are equivalent to the above two: git branch --set-upstream-to=upstream/foo git branch --set-upstream-to=... | <p>Given a branch <code>foo</code> and a remote <code>upstream</code>:</p>
<p><strong>As of Git 1.8.0:</strong></p>
<pre><code>git branch -u upstream/foo
</code></pre>
<p>Or, if local branch <code>foo</code> is not the current branch:</p>
<pre><code>git branch -u upstream/foo foo
</code></pre>
<p>Or, if you like to typ... | null | null |
1580644 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1580644 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,580,596 | null | 4,926 | null | null | null | null | null | 2009-10-16T21:53:40 | 2025-07-04T15:04:56 | Greg Hewgill | null | CC BY-SA 4.0 | null | 893 | 1,007,155 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,580,644 | true | Try: git config core.fileMode false From git-config(1) : core.fileMode Tells Git if the executable bit of files in the working tree is to be honored. Some filesystems lose the executable bit when a file that is marked as executable is checked out, or checks out a non-executable file with executable bit on. git-clone(1)... | <p>Try:</p>
<pre class="lang-none prettyprint-override"><code>git config core.fileMode false
</code></pre>
<p>From <a href="https://www.kernel.org/pub/software/scm/git/docs/git-config.html" rel="noreferrer">git-config(1)</a>:</p>
<blockquote>
<pre class="lang-none prettyprint-override"><code>core.fileMode
Tells Git... | null | null |
1527820 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1527820 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 1,527,803 | null | 4,925 | null | null | null | null | null | 2009-10-06T20:08:19 | 2022-11-30T17:41:23 | Ionuț G. Stan | null | CC BY-SA 4.0 | null | 58,808 | 179,649 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,527,820 | true | There are some examples on the Mozilla Developer Network page: /** * Returns a random number between min (inclusive) and max (exclusive) */ function getRandomArbitrary(min, max) { return Math.random() * (max - min) + min; } /** * Returns a random integer between min (inclusive) and max (inclusive). * The value is no lo... | <p>There are some examples on the <a href="https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/random" rel="noreferrer">Mozilla Developer Network</a> page:</p>
<pre><code>/**
* Returns a random number between min (inclusive) and max (exclusive)
*/
function getRandomArbitrary(min, max... | null | null |
572660 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/572660 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 572,549 | null | 4,922 | null | null | null | null | null | 2009-02-21T09:00:04 | 2021-02-20T19:57:41 | Lara Bailey | null | CC BY-SA 4.0 | null | 19,563 | 805,258 | null | null | null | null | null | null | null | null | null | null | null | null | null | 572,660 | true | This answer only applies to Git version 1.x . For Git version 2.x, see other answers. Summary: git add -A stages all changes git add . stages new files and modifications, without deletions (on the current directory and its subdirectories). git add -u stages modifications and deletions, without new files Detail: git add... | <p><em>This answer only applies to <strong>Git version 1.x</strong>. For Git version 2.x, see other answers.</em></p>
<hr />
<p><strong>Summary:</strong></p>
<ul>
<li><p><code>git add -A</code> stages <strong>all changes</strong></p>
</li>
<li><p><code>git add .</code> stages new files and modifications, <strong>withou... | null | null |
24326540 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/24326540 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 24,319,662 | null | 4,907 | null | null | null | null | null | 2014-06-20T11:46:51 | 2025-04-11T23:10:47 | Thomasleveil | null | CC BY-SA 4.0 | null | 107,049 | 105,393 | null | null | null | null | null | null | null | null | null | null | null | null | null | 24,326,540 | true | If you are using Docker-for-mac or Docker-for-Windows 18.03+, connect to your MySQL service using the host host.docker.internal (instead of the 127.0.0.1 in your connection string). If you are using Docker-for-Linux 20.10.0+, you can also use the host host.docker.internal if you started your Docker container with the -... | <p>If you are using <a href="https://docs.docker.com/docker-for-mac/networking/#there-is-no-docker0-bridge-on-macos#i-want-to-connect-from-a-container-to-a-service-on-the-host" rel="noreferrer">Docker-for-mac</a> or <a href="https://docs.docker.com/docker-for-windows/networking/#there-is-no-docker0-bridge-on-windows#i-... | null | null |
4181721 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/4181721 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 4,181,703 | null | 4,902 | null | null | null | null | null | 2010-11-15T05:41:36 | 2019-09-01T12:51:28 | codaddict | null | CC BY-SA 4.0 | null | 227,665 | 457,771 | null | null | null | null | null | null | null | null | null | null | null | null | null | 4,181,721 | true | foo="Hello" foo="${foo} World" echo "${foo}" > Hello World In general to concatenate two variables you can just write them one after another: a='Hello' b='World' c="${a} ${b}" echo "${c}" > Hello World | <pre><code>foo="Hello"
foo="${foo} World"
echo "${foo}"
> Hello World
</code></pre>
<p>In general to concatenate two variables you can just write them one after another:</p>
<pre><code>a='Hello'
b='World'
c="${a} ${b}"
echo "${c}"
> Hello World
</code></pre>
| null | null |
1594484 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/1594484 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 739,654 | null | 4,896 | null | null | null | null | null | 2009-10-20T13:05:46 | 2021-04-26T21:49:34 | Bite code | null | CC BY-SA 4.0 | null | 9,951 | 601,871 | null | null | null | null | null | null | null | null | null | null | null | null | null | 1,594,484 | false | If you are not into long explanations, see Paolo Bergantino’s answer . Decorator Basics Python’s functions are objects To understand decorators, you must first understand that functions are objects in Python. This has important consequences. Let’s see why with a simple example : def shout(word="yes"): return word.capit... | <p>If you are not into long explanations, see <a href="https://stackoverflow.com/questions/739654/understanding-python-decorators#answer-739665">Paolo Bergantino’s answer</a>.</p>
<h1>Decorator Basics</h1>
<h2>Python’s functions are objects</h2>
<p>To understand decorators, you must first understand that functions are ... | null | null |
123212 | answer | stackoverflow | 2026-08-03T01:57:01 | null | null | null | null | null | https://stackoverflow.com/a/123212 | C5IUtYwb765dRarGt | 6oAlHJZHBQQzjvMCL | 123,198 | null | 4,877 | null | null | null | null | null | 2008-09-23T19:25:35 | 2022-01-25T10:32:18 | Swati | null | CC BY-SA 4.0 | null | 12,682 | 53,487 | null | null | null | null | null | null | null | null | null | null | null | null | null | 123,212 | true | shutil has many methods you can use. One of which is: import shutil shutil.copyfile(src, dst) # 2nd option shutil.copy(src, dst) # dst can be a folder; use shutil.copy2() to preserve timestamp Copy the contents of the file named src to a file named dst . Both src and dst need to be the entire filename of the files, inc... | <p><a href="http://docs.python.org/3/library/shutil.html" rel="noreferrer"><code>shutil</code></a> has many methods you can use. One of which is:</p>
<pre><code>import shutil
shutil.copyfile(src, dst)
# 2nd option
shutil.copy(src, dst) # dst can be a folder; use shutil.copy2() to preserve timestamp
</code></pre>
<ul... | null | null |
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