instruction stringlengths 34 19.9k |
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Even though I have quite some experience in using various tools, I still can't make up my mind whether I prefer using IDE or a simple editor for code editing.
Most IDEs I have experienced are written in Java (like Eclipse) which makes them slow and bulky. What's good about them is that it provides lots of tools.
On th... |
I have been looking for some advice for a while on how to handle a project I am working on, but to no avail. I am pretty much on my fourth iteration of improving an "application" I am working on; the first two times were in Excel, the third Time in Access, and now in Visual Studio. The field is manufacturing.
The basic... |
I am maintaing several data process shell scripts which are full of if-else statements and for loops . I try to make the scritps tidy and easy to debug.
When I read some suggestions about shell code best practice, it seems that is is not a best practice to have many if-else and for loop statements.
So what should I d... |
Given a rectangular board of height H and width W.
N colors are given and each color occupies Xi percentage of area on the board.
Sum of Xi's is 1.
The colors on the board must be placed in rectangles.
An optimal solution has the rectangles' aspect ratios as close to 1 as possible.
An ideal case has the board filled on... |
This question is centered around Scheme but really could be applied to any LISP or programming language in general.
Background
So I recently picked up Scheme again having toyed with it once or twice before. In order to solidify my understanding of the language, I found the Revised^5 Report on the Algorithmic Language S... |
Can someone clarify the following things for me ?
Let's say I want to build a website and add publicity to it so I can make money out of my work.
I would use Html5 for the interface and C# with ASP.NET for the background programming.
I would use Visual Studio as my IDE and SQL server as a database.
This is just an exam... |
I am a beginning iOS programmer and use the Model-View-Controller model as a design pattern: my model doesn't know anything about my view (in order to make it compatible with any view), my view doesn't know anything about my model so they interact via my controller. A very usual way for a view to interact with the cont... |
I am working on saving state of an object to a database using the data mapper pattern, but I am looking for suggestions/guidance on the validation and error message generation step (step 4 below). Here are the general steps as I see them for doing this:
(1) The data mapper is used to get current info (assoc array) abou... |
It's not meant to be subjective or get advice on what would be the best path to take, but an objective list of things that must be known in order for me to pick up a book on compiler theory and understand it.
What level of mathematics, and related skills are required?
|
Is there a 'design pattern' styled listing of common/popular algorithms anywhere? Specifically, something that has a similar format along the lines of:
Algorithm Name: e.g., Quick Sort, Bubble Sort, etc.
Problem: A description of the stereotypical problem the algorithm is supposed to address
Description: Description o... |
I'm taking a class where I work with a partner to implement the link layer of the OSI model.
I've worked programmed with a partner once before and it went bad. Is the goal to divide the work up and decides who does what or should one person code and the other person reviews and switch roles after a while?
Any tips are ... |
I'm re-working on the design of an existing application which is build using WebForms. Currently the plan is to work it into a MVP pattern application while using Ninject as the IoC container.
The reason for Ninject to be there is that the boss had wanted a certain flexibility within the system so that we can build in ... |
Java would be jsps and servlets (or a framework such as Spring) running on the JVM and tomcat (or glassfish etc).
C# would be asp and C# running on dot.net framework and IIS ? (I have no experience with this please correct and improve my terminology)
Is there an equivalent for C++ ? I could happily call some C++ from a... |
I'm a Python programmer learning C# who is trying to stop worrying and just love C# for what it is, rather than constantly comparing it back to Python.
I'm caught up on one point: the lack of explicitness about where things are defined, as detailed in this Stack Overflow question. In short: in C#, using foo doesn't tel... |
So looking around earlier I noticed some comments about long methods being bad practice.
I am not sure I always agree that long methods are bad (and would like opinions from others).
For example I have some Django views that do a bit of processing of the objects before sending them to the view, a long method being 35... |
At my local university, there is a small student computing club of about 20 students. The club has several small teams with specific areas of focus, such as mobile development, robotics, game development, and hacking / security.
I am introducing some basic agile development concepts to a couple of the teams, such as u... |
I am (re-)designing some packages for R, and I am currently working out the necessary functions, objects, both internal and for the interface with the user. I have documented the individual functions and objects.
So I have the description of all the little parts. Now I need to give an overview of how the parts fit toge... |
I'm developing an app that will be used to open and close valves in an industrial environment, and was thinking of something simple like this:-
public static void ValveController
{
public static void OpenValve(string valveName)
{
// Implementation to open the valve
}
public static void CloseVal... |
I've been looking at some job postings and noticed that a fair amount of them list IDEs under the 'required skills' section, even for senior positions. This is not localized to one company either, but rather it's something that comes up once in every few postings.
I am perplexed by this job requirement, as my mentors a... |
I was thinking a lot about software licensing lately, because I would like to do some coding. I'm not an expert in all those licenses, so I came up with my own idea, and before I will put in on paper, I would like to make sure that I didn't reinvent a wheel, so maybe I would be able to use something that exists.
Main i... |
I've never worked in assembly, but I was just curious if SDK's exist for assembly programming. For instance, if I wanted to create a linked list, are there libraries available that have already done this, or is everything typically done from scratch?
|
I'm doing a little pro bono work for an organization in Central America. I'm ok at Spanish and my contacts are perfectly fluent but are not techincal people. Even if they don't care what I call some fields in a database I still want to make as clean a schema as possible, and I'd like to know what some typical abbreviat... |
I have written a program which records protocol messages between an application and a hardware device which matches each application request with each hardware response. This is so that I can later remove the hardware, connect a 'replay' application to the main application and wait for an application request and reply... |
I am creating a pair of apps, one to run preferably on tablets, but also laptops and PCs, and the other for WP8.
These apps are complementary - having one is of no use without the other.
I know there is a Windows Store, and a Windows Phone store, so one would be released on one, and one on the other.
My question is: a... |
I have been programming for couple of years and am generally good when it comes to fixing problems and creating small-to-medium scripts, however, I'm generally not good at designing large scale programs in object oriented way. Few questions
Recently, a colleague who has same number of years of experience as me and I w... |
Possible Duplicate:
Do I need to use an interface when only one class will ever implement it?
I am taking over a project where every single real class is implementing an Interface. The vast majority of these interfaces are implemented by a single class that share a similar name and the exact same methods (ex: MyCar... |
I have a course in which the proffesor has asked us to create a DSL for a our final project. He presented us in the first courses xText with Eclipse. This being a new course, I am still a bit fuzzy on what Domain Specific Languages means.
This is my current understanding: a domain specific language is a language th... |
Is there a good term that is similar but different than "deprecate" to mean that a method or API is in the code base but should not be used because its implementation is not complete or will likely change? (Yeah, I know, those methods shouldn't be public, yada yada yada. I didn't create my situation, I'm just trying to... |
First of all: I've got no academic background. I'm working primarily with Java and Spring and I'm also fond of web programming and relational databases. I hope I'm using the right terms and I hope that this vague question makes some sense.
Today the following question came to my mind: How much is modern programming sti... |
I'm a big StackOverflow fan, but I think this question belongs here, correct me if I'm wrong.
So basically I'm trying to localize my plugin in as many languages as possible. I posted a section on the docs to reach people that wants to help translating but I only got one contributor that attached a German translation. S... |
This is a follow up question on my past questions :
Concurrency pattern of logger in multithreaded application
As suggested by others, I am putting this question separately.
As the learning from the last question. In a multi-threaded environment, the logger should be made thread safe and probably asynchronous (where ... |
Doing unit testing for the first time at a large scale, I find myself writing a lot of repetitive unit tests for my business logic. Sure, to create complete test suites I need to test all possibilities but readability feels compromised doing what I do - as shown in the psuedocode below.
How would a well written, readab... |
When coding, I naturally often come up with classes or a set of classes with a high reusability. I'm looking for an easy, straight-forward way to work on them separately.
I'd like to be able to easily integrate them into any project; it also should be possible to switch to a different version with as few commands as po... |
I'm working on a web project (PHP, jQuery) which currently using Google Maps powering up the map functionality of the application, however we need to make it multi-platform like you can go to the dashboard and choose one from 5-10 map providers (which Goolge Maps is just one of them) to underlying your map functionalit... |
When I'm using C# to write some code and I define an interface using Visual Studio 2010, it always includes a number of "using" statements (as shown in the example)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace TestEngine.TestNameSpace
{
interface ITest1
{
... |
About 3 months ago our lead web developer and designer(same person) left the company, greener pastures was the reason for leaving. Good for them I say. My problem is that his department was completely undocumented. Things have been tough since the lead left, there is a lot of knowledge both theoretical knowledge we us... |
Possible Duplicate:
How do you dive into large code bases?
I just joined a new company and started to study one of the their bigger system. For me to be productive, I need to understand the entire system without too much help. Other programers are really busy and dont' have time to hold my hands.
I used to use brain... |
Our data model has almost 200 classes that can be separated out into about a dozen functional areas. It would have been nice to use domains, but the separation isn't that clean and we can't change it.
We're redesigning our DAL to use Entity Framework and most of the recommendations that I've seen suggest using a Repos... |
I'm attempting to write a process that matches obscure strings to a single 'master string' for further processing. I have a lot of data that looks something like this:
Basketball
Basket Ball
Football
BasketBallR
BBall
BBall - r
FootB
...and so on. These need to be mapped to a master record like so:
Basketball = ... |
When it comes to OO database access you see two common approaches - the first is to provide a class (say "Customer") with methods such as Retrieve(), Update(), Delete(), etc. The other is to keep the Customer class fairly lightweight (essentially just properties) and perform the database access elsewhere, e.g. using a ... |
We are initiating a Spring + Primefaces project and the first problem we have encountered concerns storing the XHTML pages into the WEB-INF folder.
When we use a faces form in a view located inside the WEB-INF folder, then the commandButton does not execute the managed bean method.
<h:form id="loginForm">
<p:comma... |
Say we have a list of Task entities, and a ProjectTask sub type. Tasks can be closed at any time, except ProjectTasks which cannot be closed once they have a status of Started. The UI should ensure the option to close a started ProjectTask is never available, but some safeguards are present in the domain:
public class ... |
I'm resizing an image based on a non-integral conversion factor (a bmp image, in fact). I understand how resizing works, just non with a decimal number. For instance, if the factor were 2, I would simply write the individual pixels twice to the output file. You can't really write 1.5 pixels if the factor were, say, ... |
I would like to port a large Win32 DLL to native linux in C++. I don't think I can use Wine for a DLL like mine, because users of the DLL would then also have to be in Wine, and then they would all whine... As a Windows C++ programmer, I don't (yet) have any familiarity with the GUI front-end services in linux, but i... |
I am a bit confused as to what I am/am not allowed to do with a LGPL Library that I intend on using in a small scale commercial C++ Application that I am developing. My current understanding, although I don't know if I am correct, is that I am permitted use the library without releasing the source to the rest of my app... |
In a few months, a friend will establish his startup software company, and I will be the software architect with one additional developer. Though we have no real day-to-day experience with agile methods, I have read much "overview" type of material on them, and I firmly believe they are a good - if not the only - way t... |
I hope you can confirm or disprove whether I understand this correctly. I know for certain that Java Applets can have hardware acceleration and I wonder if this is the only known way to have graphics hardware acceleration in web pages or is there another way?
|
As I have already asked here, I have to implement a Multi-Platform Map application. Now I have Mapstraction as an option which uses Javascript to implement the desired functionality. My question is, "Is there any reason/benefit to implement such a library (let say, Adapters) in Server-side (in my case, PHP)?"
As these ... |
What is the best method to use and share variables between functions in non object-oriented program languages?
Let's say that I use 10 parameters from DB, ID and 9 other values linked to it. I need to work with all 10 parameters in many functions. I can do it next ways:
1. call functions only with using ID and in ever... |
For example if I have code that contains parts of code rewritten from code found here or on Stack Overflow or other Creative-Commons licensed code, can my final code be licensed with an Apache License?
|
I understand Objective-C categories and how they become useful, but I always have a hard time explaining the concept to other programmers that are not familiar with Objective C.
Maybe I'm just bad at explaining things, but I was thinking at another way to explain it by comparing to similar features offered by other (m... |
Can code licensed under a clause like this:
Redistribution of this work, with or without modification, is permitted if
Bob Joe is attributed as the original author or licensor of
this work, but not in any way that suggests that Bob Joe endorses
you or your use of the work.
be used in a project using GPL, or does this ... |
Inspired by this answer:
Liskov Substitution Principle
requires
that
Preconditions cannot be strengthened in a subtype.
Postconditions cannot be weakened in a subtype.
Invariants of the supertype must be preserved in a subtype.
History constraint (the "history rule"). Objects are regarded as being modifiable only... |
We have a dispute regarding who owns which tasks when it comes to the CSS on our live site.
Our designer argues that he is not responsible to log-in to word press and modify the css or use ftp for any changes because that's not his job description while developer argues that since it is css, it belongs to designer and ... |
My team follows the Scrum development cycle. We have received feedback that our unit testing coverage is not very good.
A team member is suggesting the addition of an external testing team to assist the core team, but I feel this will backfire in a bad way.
I am thinking of suggesting pair programming approach. I have ... |
I am currently reviewing a code base and noticed that a majority of the calls (along with DB connections) are just buried inside the PHP scripts. I would have assumed that like other languages they would have developed some sort of data access layer (Like I would do in .Net or Java) for all of the communication to the ... |
I'm currently planning on implementing API for HgLab and the obvious role model for me here is GitHub.
My API obviously won't be an exact copy due to inherent differences between Mercurial and Git and due to different tasks GitHub and HgLab solve, but similarity will be quite clear.
How ethical of me will it be to copy... |
I was following this highly voted question on possible violation of Liskov Substitution principle. I know what the Liskov Substitution principle is, but what is still not clear in my mind is what might go wrong if I as a developer do not think about the principle while writing object-oriented code.
|
I often develop SQL database applications using Linq, and my methodology is to build model classes to represent each table, and each table that needs inserting or updating gets a Save() method (which either does an InsertOnSubmit() or SubmitChanges(), depending on the state of the object). Often, when I need to repres... |
Possible Duplicate:
How to manage a Closed Source High-Risk Project?
I'm working on an institution that has a really strong sense of "possession" - each line of software we write should be only ours. Ironically, I'm the only programmer (ATM), but we're planning in hiring others.
Since my bosses wouldn't count the ne... |
I'd like to make a simple-ish website that is essentially a small game. Key strokes are to be processed and sent to a server (already acquired and should support SQL and JSP, I believe) which then translate to a location and written to the DB.
SQL queries are to be used to retrieve these locations and written to other... |
I have a belief that markup should remain in mark-up and not in the code behind.
I've come to a situation where I think it is acceptable to build the HTML in the code behind. I'd like to have some consensus as to what the best practices are or should be.
When is it acceptable to build html in the code behind? What is... |
Why are some data types or functions made Obsolete in a newer version of an API and others are marked as Deprecated? Why not make them all Obsolete or why not make them all Deprecated?
|
I've seen this sort of pattern in code before:
//pseudo C# code
var exInfo = null; //Line A
try
{
var p = SomeProperty; //Line B
exInfo = new ExceptionMessage("The property was " + p); //Line C
}
catch(Exception ex)
{
exInfo.SomeOtherProperty = SomeOtherValue; //Line D
}
Usually the code is... |
I've been tasked with designing Data layer for a website at work, and I am very interested in architecture of code for the best flexibility, maintainability and readability.
I am generally acutely aware of the value in completely separating out my actual Models from the Data Access layer, so that the Models are complet... |
I've recently started experimenting with natural language processing (NLP) using Stanford's CoreNLP, and I'm wondering what are some of the standard ways to store NLP parsed data for something like a text mining application?
One way I thought might be interesting is to store the children as an adjacency list and make g... |
I need a key-value storage in a simplest form we can think of.
Keys should be some fixed-length strings, values should be some texts.
This key-value storage should have an HTTP-backed API.
That's basically it. As you can see, there is no big difference between such storage and some web application with some upload func... |
I have downloaded a currently inactive GPL project with a view to updating it and releasing the completed codebase as open source. I'm not really a fan of GPL though and would rather licence my project under BSD.
What are my options? Is it just a case of keeping any existing non-touched code under the GPL and any updat... |
I've seen some people love and some loathe Perforce. As users or administrators with experience with other version control systems (free cookie to the ones with DVCS experience [git, Mercurial]), what is the main reason/feature that makes you love Perforce over other version control systems?
Edit: No, I don't sell Perf... |
As I have done multiple times before, I've written bash scripts, and just general commands that go nowhere. They just blink the little command line cursor at me for infinity until I control+C the command. When I do cancel the command, what exactly is going on when I do this? Am I somehow stopping and killing the curr... |
Now, in c++ '...' became a first class operator.
In speech, how do you pronounce it?
So far I've heard:
dot dot dot
triple dot
ellipsis
related: Is it OK to replace ... with ellipsis in writing?
e.g. "The ellipsis operator expands the pack"
EDIT (clarification): We are all aware that '...' as a punctuation mark is in... |
In Mercurial I can do this with the bundled Purge Extension and executing the following command:
hg purge
Also good to get rid of ignored files:
hg purge --all
I'm curious about the most practical/used equivalent solution in git.
Edit: I want to just get rid of the untracked files, not reset everything (e.g. suppose... |
So I mainly use Mercurial for my projects and I decided to sit down and learn all Git's shenanigans to discover if I'm in the right side (at least for me).
I'm learning that git uses namespaces for branches and I would like to know (in your experience) what is the point of namespaces?. In Mercurial I could just set the... |
For example, if I'm using some MVC-like architecture, which folder structure should I use:
domain1/
controller
model
view
domain2/
controller
model
view
Or:
controllers/
domain1
domain2
models/
domain1
domain2
views/
domain1
domain2
I deliberately left out file extensio... |
I'm developing a numeric application (nonlinear optimizer), with a zillion knobs to tweak and rising.
It's not my first foray into this domain, but this time there are even more variables in the code and I'm on a tight schedule. Don't want to waste time fiddling.
Days or even months can potentially be wasted adjusting ... |
I am trying to run multiple sites using single code base and code base consist of the following module (i.e. classes)
User module
Q & A module
Faq module
and each class works on MVC pattern i.e. it consist of
Entity class
Helper class (i.e. static class)
View (i.e. pages and controls)
and let's say I have 2 sit... |
I think "why PHP over Java" has been already discussed in other questions, the question I have is:
What makes LAMP/WAMP stacks so cheap and abundant vs a Glassfish one? What are the prime factors behind this trend?
Also, Why has no java based light weight stack come up as a competitor?
|
We are storing config files as XML. With that being said, when reading the XML file, is it better to use LINQ to query the XML file or would using the XMLDocument and/or XMLNode classes better to use?
To me, it would seem that in this instance, LINQ is not necessary. But then I tried to think of any value of one over t... |
Doing R&D work, I often find myself writing programs that have some large degree of randomness in their behavior. For example, when I work in Genetic Programming, I often write programs that generate and execute arbitrary random source code.
A problem with testing such code is that bugs are often intermittent and can b... |
As I understand, the term "Backporting" is used to describe a fix which is applied in a future version which is also ported to a previous version. Wikipedia definition is as follows:
Backporting is the action of taking a certain software modification (patch) and applying it to an older version of the software than it ... |
Firstly, I am following the convention that a bounded context is synonymous to a department, or possibly one department has 1 to many bounded contexts.
We have a client consultancy department that has a Documentation Service. Documents are stored in the Document Store Service (which is where all documents in the compan... |
Recently, I've come to prefer mapping 1-1 relationships using Dictionaries instead of Switch statements. I find it to be a little faster to write and easier to mentally process. Unfortunately, when mapping to a new instance of an object, I don't want to define it like this:
var fooDict = new Dictionary<int, IBigObject>... |
I'm making a large scale MVC application using Orchard. And I'm going to be separating my logic into modules. I'm also trying to heavily decouple the application for maximum extensibility and testability.
I have a rudimentary understanding of IoC, Repository Pattern, Unit of Work pattern and Service Layer pattern.
I've... |
I have a site done in Rails, which uses javascript to load files and generate forms for the user to input certain information. Those files and parameters are then to be used in a fortran code on the server.
When the UI was on the server (using Qt), I would create a parameters file and execute the fortran code using th... |
I have recently been set a target to achieve readiness to successfully manage and deliver results through the usage of offshore teams on our mainline development project within 12 months.
Our mainline is a multi-thousand user highly available web application, and various related SAAS components delivered through the ab... |
My coworkers and I have been bending our minds to figuring out why anyone would go out of their way to program numbers in a base other than base 10.
I suggested that perhaps you could optimize longer equations by putting the variables in the correct base you are working with (for instance, if you have only sets of 5 of... |
I am working as software developer and struggling with this problem time and time again for almost thirteen years. There seems not to be any way out of the following problem.
And it happens with small projects as well.
For example, I plan to write an extension for Microsoft Visual Studio. I dowload learning materials, ... |
Supposse there's a company where web sites/apps are designed to resemble desktop apps.
They struggle to add:
Splash screens
Drop-down menus
Tab-pages
Pages that don't grow downward with content, context is inside scrollable area so page is of a fixed size, as if resembling the one-screen limitation of desktop apps.
M... |
I searched on the web how to access in an efficient manner to a central database at a remote location and I met suggestions to use web services instead direct access (i.e. JDBC etc ) to a database.I wonder the reason of that and any other suggestions.
|
Most functional programming languages (e.g. Common Lisp, Scheme / Racket, Clojure, Haskell, Scala, Ocaml, SML) support some common higher-order functions on lists, such as map, filter, takeWhile, dropWhile, foldl, foldr (see e.g. Common Lisp, Scheme / Racket, Clojure side-by-side reference sheet, the Haskell, Scala, OC... |
For example: http://commons.wikimedia.org/wiki/File:Epithalamus.png
Could I take an image file like that, splice it apart, and use it in an application that would be sold?
|
Let's say SDK is under specific license that is not compatible with some other licenses (like Flex SDK with GPLv2). Can I create an application by using for example Flex SDK, and license its distribution under GPLv2? Can my application be considered a derivative work? What is a relation between SDK license and applicat... |
My datasource sends information in 100 batches of 100 records with a delay of 1 to 3 seconds between batches.
I would like to start processing data as soon as it's received, but I'm not sure how to best approach this.
Some ideas I've been playing with include:
yield
Concurrent Dictionary
ConcurrentDictionary with IN... |
I'm sure you've seen it. The database has a bunch of tables called Forms, Controls,FormsControls, ControlSets, Actions and the program that queries these tables has a dynamically generated user interface. It will read all the forms, load a home page that has links to them all, or embed them in some tabbed or paged ho... |
Inevitably I'll stop using an antiquated css, script, or image file. Especially when a separate designer is tinkering with things and testing out a few versions of images. Before I build one myself, are there any tools out there that will drill through a website and list unlinked files? Specifically, I'm interested ... |
I know that most of you would advice to go with the strategy and methodology of the project.
However I just have a quick question, from Senior point of view, what would be better to see quick small commits from a developer, or large chunk of code pushed to the branch?
|
What is the difference of delegator and dispatcher?
I am not quite sure of either concept.
|
How should I design a system for an action game (think in Golden Axe) where events can happen remotely?
I'm using TCP for this because the client is in flash.
There's so many options, I can make a binary protocol (I don't like this idea, I found it to be too hard to mantain) but I was also thinking that passing jsons t... |
We use WPF and Expression Blend 4. I'm trying to improve our workflow by tutoring one of our designers to use it for styling and animation.
Slowly but surely I get the impression Blend in itself is to technical for the designer in question. I myself use it only occasionally (it's great for Visual States for instance) b... |
I see more and more articles about logging in JSON. You can also find one on NodeJS blog. Why does everyone like it so much? I can only see more operations getting involved:
A couple new objects being created.
Stringifying objects, which either involves calculating string length or multiple string allocations.
GCing a... |
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