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I have gone through a number of GPL-related questions, the most recent being this one:
https://stackoverflow.com/questions/3248823/legal-question-about-the-gpl-license-net-dlls/3249001#3249001
I'm trying to see how this would work, so bear with me. I have a simple GUI interface for a game of Chess. It essentially can s... |
I have some code that uses a library that I and others frequently modify (usually only by adding functions and methods). We each keep a local fork of the library for our own use.
I also have a lot of small "driver" programs (~100 lines) that use the library and are used exclusively by me. Currently, I have both the dri... |
If we take:
http://example.com/foo
is it fair to say that:
ftp://example.com/foo
.. points to the same resource, just using a different mechanism for resolving it (and of course possibly a different representation, but perhaps not)?
This came to light in a discussion we were having surrounding some internal tooling w... |
I've been bumping around the startup world for a while, and most startups I've seen seem to have (amongst other things) two things in common:
A lack of money
An inability to, reliably, hire good quality developers
This means that, for startups, the ideal hire is someone who is free - where they can wait until they've... |
I am beginning the development of a broser based game in which players take certain actions at any point in time.
Big parts of gameplay will be happening in real life and just have to be entered into the system.
I believe a good kind of comparison might be a platform for managing fantasy football, although I have virtu... |
I have a Python script on a box that I want to call from a Java server, over the network. I know that I can start a server on the Python side and then connect to it from the Java site, but I am trying to see if there is a way to avoid the overhead of running a server on the Python side. Is there any other way of doing ... |
I am trying to build a business around an iPhone app. The app will be our main sales channel, and being able to adapt the sales channel faster than the 9-10 days delay cause by the app review times is crucial. Therefore, I was wondering whether there is anything I can do to improve the speed of reviews. I am thinking t... |
I just thought it could be a good thing to have a dedicated version control branch for all database schema changes and I wanted to know if anyone else is doing the same and what have the results been.
Say that you are working with:
Schema model/documentation (some file where you model the database visually to generate... |
What is the actual meaning of a wireframe of a project?
|
I'm developing a web calendar in php (using Symfony2) inspired by iCal for a project of mine.
At this moment, I have two classes: a class "Calendar" and a class "CalendarCell".
Here you are the two classes properties and method declarations.
class Calendar
{
private $month;
private $monthName;
private $year... |
I am the only developer working on a web application which is nearing to its end. Now we are looking into making it Live in maybe a couple of months time.
This is a web application for a non IT company. Though they have their own internal IT team, they have asked me on what will be the hardware requirements for the li... |
Need some direction on 3d point cloud display using OpenGL in c++ (vs2008). I am brand new to OpenGL and trying to do a 3d point cloud display with a texture. I have 3 2D arrays (each same size 1024x512) representing x,y,z of each point. I think I am on the right track with
glBegin(GL_POLYGON);
for(int i=0; i<1024; i+... |
I have asked before and created a lot of controversy so I tried to collect some data and ask similar question again. E.g. V&V where all testing is only validation: http://www.buzzle.com/editorials/4-5-2005-68117.asp
According to ISO 12207, testing is done in validation:
•Prepare Test Requirements,Cases and Specificati... |
In Java particularly Android development, is there any difference between declaring an object like
SomeObject object = new SomeObject();
someField.setObject(object);
compared to an anonymous object (not sure if that's what is called)
someField.setObject(new SomeObject());
performance wise? Or improvements in memory.... |
I need to call a program from PHP and pass some vars and/or sets of key-value pairs to it. How do I pass these vars, through arguments to the called function?
exec("/path/to/program flag1 flag2 [key1=A,key2=B]");
Or is there a better method to achieve this? Somebody suggested to me to write them into a txt file and pa... |
Noob question. I am not quite able to tell the difference between a REPL and an interactive shell just by reading the definitions on Wikipedia.
Wiki notes that REPL is a particular kind of interactive language shell. Is it a proper subset though? The Wiki definition seems to restrict the terminology REPL to Lisp-like l... |
I am trying to understand what would be the correct usage of Spring. Not syntactically, but in term of its purpose.
If one is using Spring, then should Spring code replace all bean instantiation code?
When to use or when not to use Spring, to instantiate a bean?
May be the following code sample will help in you underst... |
In a traditional VCS, I can understand why you would not commit unresolved files because you could break the build. However, I don't understand why you shouldn't commit unresolved files in a DVCS (some of them will actually prevent you from committing the files).
Instead, I think that your repository should be locked ... |
Possible Duplicate:
Building websites, which is the better approach MVP or MVC?
I am trying to learn the difference between the MVC and MVP models. So far, I do not see much difference in terms of how they are architecturally set up. So my question is when should the MVP model be chosen over the MVC model? Are there... |
The main idea behind OOP is to unify data and behavior in a single entity - the object. In procedural programming there is data and separately algorithms modifying the data.
In the Model-View-Controller pattern the data and the logic/algorithms are placed in distinct entities, the model and the controller respectively... |
As Eclipse uses OSGi to handle modules and bundles, and therefore should be able to hot-deploy them, why does it suggest to restart after installing a plugin "for changes to take effect"?
Has Eclipse hit some OSGi limitation, or is its architecture such that even with hot-deploy, it cannot guarantee that deployments we... |
As a follow-up to this question:
If I'm working on a team by myself, I can maintain useful commit messages when merging branches by squashing all the commits to a single diff and then merging that diff. That way I can easily see what changes were introduced in the branch, and I have a single summary describing the feat... |
Basically, we undid history. I know this is bad, and I am already committed to avoiding this at all costs in the future, but what is done is done.
Anyway, I issued a git push origin <1_week_old_sha>:master to undo some bad commits. I then deleted a buggered branch called release(which had also received some bad com... |
A relatively minor question, but I haven't been able to find official documentation or even blog opinion/discussions on it.
Simply put: when I have a private object whose sole purpose is to serve for private lock, what do I name that object?
class MyClass
{
private object LockingObject = new object();
void DoS... |
I'm working on a Web Application using node.js in which I'm building a partial copy of the database on the client-side to decrease the load on my server. Right now, I have a function like this (expressed as python-style pseudocode, but implemented in JavaScript):
get(table_name,primary_key):
if primary_key in cache... |
I have a general question about creating a drawing application, the language could be C++ or ObjectiveC with OpenGL.
I would like to hear what are the best methods and practices for storing strokes data.
Think of the many iPad apps that allow you to draw with your finger (or a stylus) or any other similar function on... |
I have been doing some research into artificial intelligence and I came across a 2007 paper titled "Checkers is Solved" on the game of checkers being solved by AI techniques after more than 16 years of trial. A solution to the game is defined by the team as "determining the final result in a game with no mistakes made... |
I am writing a program, or starting at the very beginning of it, and I am thinking of purchase verification systems as a final step. I will be catering to Macs, PCs, and possibly Linux if all is said and done. I will also be programming this for smartphones as well using C++ and Objective-C. (I am writing a blueprint b... |
I'm writing a software for periodically checking a specific range of networked devices' reach-ability. I'm specifying the address range and the time frequency for checking their reachability, in an xml file. Which technique can I use to check that xml file during the start up of the program for any modifications done ... |
I am reading about Alistair Cockburn's Hexagonal Architecture with interest.
One claim he makes is:
Finally, the automated function regression tests detect any violation of the promise to keep business logic out of the presentation layer. The organization can detect, and then correct, the logic leak.
I do not underst... |
Is there a way this problem could benefit from a solution with multiple threads, rather than a single thread?
In an interview, I was asked to solve a problem using multiple threads. It appears to me that the multiple threads lends no benefit.
Here's the problem:
You are given a paragraph , which contain n number of w... |
Suppose that you have a large project supported by an API base. The project also ships a public API that end(ish) users can use.
Sometimes you need to make changes to the API base that supports your project. For example, you need to add a feature that needs an API change, a new method, or requires altering of one o... |
In tutorials and books, I have never seen a single word describing the object that the injected object is injected into. Instead, other terms are used, like "injection point" which don't denote the object containing the injected object. And nothing I can think of sounds right, except maybe "injection target" - but I ha... |
Let's consider the following example of a class, which is an entity that I'm using through Entity Framework.
- InvoiceHeader
- BilledAmount (property, decimal)
- PaidAmount (property, decimal)
- Balance (property, decimal)
I'm trying to find the best approach to keep Balance updated, based on the values of... |
I'm trying to setup a version control for my one man project. My project files are in sync thanks to live mesh (but I could be using dropbox for that matter), between my laptop, my home pc and my office pc. I'm now using Netbeans with local file history. Sometimes it helps to revert to a previous state of one file. But... |
Our website is written in ASP.NET MVC 3 and we want to change a feature in the core functionality of the site.
The problem is not every client can be moved to this new version/format (because of some technical inner restrictions) so it means that we need to keep 2 versions of the same functionality (backend and front... |
I am an architect in an enterprise looking to build a SaaS solution. Our products are distributed over many different deployable containers, Web Services, Web UI's, etc.
I am looking for some open-source or 3rd party software solution to manage the settings of our application. These would be similar to the setting... |
I stumbled upon this news article on BBC,
RSA splits passwords in two to foil hackers' attacks
tl;dr - a (randomized) password is split in half and is stored across two separate servers, to foil hackers that gained access to either server upon a security breach.
Now the main question is, how would this kind of system... |
We've begun using FindBugs and annotating our parameters with @Nonnull appropriately, and it works great to point out bugs early in the cycle. So far we have continued checking these arguments for null using Guava's checkNotNull, but I would prefer to check for null only at the edges--places where the value can come in... |
I work alone in some iOS projects in a local environment.
I have been thinking in a way to be able to share my development environment between my Mac Mini and my MacBook. I mostly work at home in the Mini but sometimes I need to do a demo or work outside and I would like to have the development environment mirrored in ... |
I have some articles (more than 200 pages) in plain text. It needs to be converted to an given PDF markup. I got some Photoshop files for the headers for every page and a list of requirements for the different elements.
Which program would you use? And what would be your workflow?
|
My code looks like this
import java.util.Scanner;
public class StudentGrades {
public static void main(String[] argv)
{
Scanner keyboard = new Scanner(System.in);
byte q1 = keyboard.nextByte() * 10;
}
}
It gives me an error Type mismatch: cannot convert from int to byte.
Why would Java store a literal opera... |
I represent a software company that is in process of building a large software development team. We are picky in who we hire and have really good retention rate (most of the devs have been here for an average of 5-6 years).
We've been spending a lot of developers' and HR time and have a low applications to hire ratio.... |
Can you think of some reasons that the management force the developers to write and call Stored Procedures instead of inline SQL statements directly?
Even a very simple CRUD statement, writing a stored procedure takes more time and create extra workload.
|
A service software company is like an outsource company.
You give us the requirements, we band the result for you.
This is a unique situation where each project is short lived and vastly different from one to another.
I'm interested to learn if anybody is successful in running this kind of company and any good resourc... |
I have heard a lot and read about the Javascript server side language i.e Node.js, and saw many comparisons in favor of Node.
I don't understand what makes it better or faster, or how it even relates to something as mature as Java Servlets.
But Servlets are built on top of a multithreaded programming language as oppose... |
We generally talk about paradigms of programming as functional, procedural, object oriented, imperative etc but what should I reply when I am asked the paradigms of algorithms?
For example are Travelling Salesman Problem, Dijkstra Shortest Path Algorithm, Euclid GCD Algorithm, Binary search, Kruskal's Minimum Spanning... |
When creating an image slider, using a cross fade is one of more popular effects. Various sliders use differing techniques to create such an effect. Major techniques I've found so far are:
Method 1: Use an overlay and underlay <div> and fade in and out each other's visibility.
Method 2: Create a <div> matching the e... |
Let's say I have a data model for a blog posts and have two use-cases of that model - getting all blogposts and getting only blogposts which were written by specific author.
There are basically two ways how I can realize that.
1st model
class Articles {
public function getPosts() {
return $this->connection... |
We are a group of 4 software development students currently studying at the Cape Peninsula University of Technology. Currently, we are tasked with developing a web application that functions as a online store. We decided to do the back-end in Java while making use of Google Guice for persistence(which is mostly irrelev... |
I'm setting my first steps into domain driven design, bought the blue book and all, and I find myself seeing three ways to implement a certain solution. For the record: I'm not using CQRS or Event Sourcing.
Let's say a user request comes into the application service layer. The business logic for that request is (for wh... |
I'm working on several applications, mainly legacy ones.
Currently, their code coverage is quite low: generally between 10 and 50%.
Since several weeks, we have recurrent discussions with the Bangalore teams (main part of the development is made offshore in India) regarding the exclusions of packages or classes for Cob... |
The context:
We are working on a multi-threaded (Linux-C) application that follows a pipeline model.
Each module has a private thread and encapsulated objects which do processing of data; and each stage has a standard form of exchanging data with next unit.
The application is free from memory leak and is threadsafe ... |
Is it important to point out the good parts of the code during a code review and the reasons why it is good? Positive feedback might be just as useful for the developer being reviewed and for the others that participate in the review.
We are doing reviews using an online tool, so developers can open reviews for their c... |
I have spent the past several days learning about domain driven design and attempting to apply it to a current project. I decomposed the problem domain into the canonical logical components: domain, infrastrucutre, and presentation. Having completed a first pass, I stepped back and realized that the architecture I crea... |
So I just took a data structure midterm today and I was asked to determine the run time, in Big O notation, of the following nested loop:
for (int i = 0; i < n-1; i++) {
for(int j = 0; j < i; j++2) {
//1 Statement
}
}
I'm having trouble understanding the formula behind determining the run time. I thoug... |
I'm trying to provide a mechanism for validating my object like this:
class SomeObject {
private $_inputString;
private $_errors=array();
public function __construct($inputString) {
$this->_inputString = $inputString;
}
public function getErrors() {
return $this->_errors;
... |
I've recently read three separate books on algorithms and data structures, tcp/ip socket programming, and programming with memory. The book about memory briefly discussed the topic of serializing data structures for the purposes of storing it to disk, or sending it across a network. I can't help but wonder why the the ... |
I always use System.out.println(...) to debug my code, and it works pretty well. In which cases do you use the eclipse java debugger? I never had to use it and the little bug symbol is still ab bit mysterious to me. Are there cases where the debugger helps me that I can´t solve with a println?
|
I have written many codes using OOPS and I am still to understand when is a code good enough to be accepted by experts. The thought procedure of every man is different and so is the design. My question is should I do something in particular to design my programs in such a way that they are good enough to be accepted by... |
The solution for the 3-d case can be found here; I would like to get the generalized version. There's no simple generalization of the Mathworld algorithm since the cross product is defined only for 3 and 7 dimensions, so I understand.
|
I'm working on a PHP project where some object (class member) may contain different data type. For example :
class Property {
private $_id; // (PK)
private $_ref_id; // the object reference id (FK)
private $_name; // the name of the property
private $_type; // 'string', 'int', 'float(n,m)', 'dat... |
It might be like this: Parameter means from the callers POV and arguments mean inside the procedure, or other way round.
Or is there no difference?
Update
In Swedish we say "anropsparametrar" i.e. "parameters that are calling the procedure" and we would not say "anropsargument" ("arguments that are calling the procedu... |
We are doing software testing by testing a lot of I/O cases, so developers and system analysts can open reviews and test for their committed code within a given time period (e.g. 1 week). But when it come across with extracting information from a database, how to consider the cases and the corresponding methodology t... |
I've heard that Perforce is very good at merging, I'm guessing this has to do with that it tracks changes in the form of changelists where you can add differences across several files in a single blow. I think this implies Perforce gathers more metadata and therefore has more information to do smarter merging (at least... |
I'm seeing a lot of instantiable classes in the C++ and Java world that don't have any state.
I really can't figure out why people do that, they could just use a namespace with free functions in C++, or a class with a private constructor and only static methods in Java.
The only benefit I can think of is that you don't... |
In visual programming, there are many events which support our application tasks. So, along with user defined processes, should these also be in flowchart or not?
What about the constructors of classes, are they supposed to be shown in flowchart or not?
|
Title says most of it. I have found surprising little information about this. I have a long running operation of which the user wants to see the progress (as in, item x of y processed). I also need to be able to pause and stop the operation. (Stopping doesn't rollback the items already processed.)
The thing is, it's no... |
Situation: a piece of software reads frames of data from a file in a seperate thread and puts it on a queue, emptied by another thread. That second thread periodically checks on the queue and fails rather gracefully, by showing an error message stating the read timed out, if no data is available within a certain amount... |
I am writing code to parse mathematical expression strings, and noticed that the order in which chained power operators are evaluated in Python differs from the order in Excel.
From http://docs.python.org/reference/expressions.html:
"Thus, in an unparenthesized sequence of power and unary operators, the operators are e... |
Sorry, for my confused question. I'm looking for some pointers.
Up to now I have been working mostly with Java and Python on the application layer and I have only a vague understanding of operating systems and hardware. I want to understand much more about the lower levels of computing, but it gets really overwhelming ... |
I just read through the documentation on the Codecs module, but I guess my knowledge/experience of comp sci doesn't run deep enough yet for me to comprehend it.
It's for dealing with encoding/decoding, especially Unicode, and while to many of you that's a complete and perfect explanation, to me that's really vague. I d... |
I have a large java project, and we use maven for our build cycle. This one project is used extensively - in other projects, in various applications, some of which are contained in it and some which are elsewhere... To be honest, it's a bit of a mess (various bits added on at different times for specific purposes), and... |
Looking into Haskell's standard library we can see:
newtype StateT s m a = StateT { runStateT :: s -> m (a, s) }
newtype WrappedMonad m a = WrapMonad { unwrapMonad :: m a }
newtype Sum a = Sum { getSum :: a }
Apparently, there (at least) 3 different prefixes used to unwrap a value inside a newtype: un-, run- and get... |
Say, my project have dependency N with version 1.0.0.
Then something have changed, and I should depend on newer version - let it be 1.0.1.
OK, I'm incrementing dependency version, nothing else changes in my code.
It looks like I should increment my own projects' version, but how exactly I should increment?
Should I inc... |
Edit: I'm rephrasing the question a bit. Apparently I caused some confusion because I didn't realize that the term destructor is used in OOP for something quite different - it's a function invoked when an object is being destroyed. In functional programming we (try to) avoid mutable state so there is no such equivalen... |
Sometimes I would like to declare a property like this:
public string Name { get; readonly set; }
I am wondering if anyone sees a reason why such a syntax shouldn't exist. I believe that because it is a subset of "get; private set;", it could only make code more robust.
My feeling is that such setters would be extreme... |
I have an issue tracking system, but sometimes users report bugs directly to me in an email.
If I'm responding to a bug report in an email, what's a good etiquette to use? Do I thank them for reporting the bug? Do I apologize for it ? Is there a good template anywhere?
|
I am implementing a tree Data structure in c# based (largely on Dan Vanderboom's Generic implementation). I am now considering approach on handling a Count property which Dan does not implement.
The obvious and easy way would be to use a recursive call which Traverses the tree happily adding up nodes (or iteratively tr... |
Wikipedia's definition of software rot focuses on the performance of the software. This is a different usage than I am used to; I had thought of it much more in terms of the cleanliness and design of the code—in terms of the code's having all the standard quality characteristics: readability, maintainability, etc. Now,... |
I have been practicing coding for a while, but the problem is that it takes me a lot of time to write a solution for the problems. I want to ask if competitive programming can help me in improving this.
If yes, then how should I start and from which web sites could I use (like TopCoder)? I obviously won't be able to so... |
How do you work with forms in your web applications?
I am not talking about RESTful applications, I don't want to build heavy front-end using frameworks like Backbone.
For example, I need to add "contact us" form. I need to check data which was filled by user and tell him that his data was sent.
Requirements:
I want t... |
I am having a design problem in test automation:-
Requirements - Need to test different servers (using unix console and not GUI) through automation framework. Tests which I'm going to run - Unit, System, Integration
Question: While designing a test case, I am thinking that a Test Case should be a part of a test suite (... |
I'm sure this scenario has arisen before, and I want to know what experience has taught to be the best solution.
I have a number of classes that are all of a kind. Say all the objects are "Content". They may be "Article", or "Book" for example.
The reason I want the "Content" abstraction is because I want to define... |
On this picture:
Does updating grades extend a feature that shows grades? I am not sure if the notation is correct, so I am hoping you guys will know it.
|
I have recently seen a few URIs containing the query parameter "utf8=✓". My first impression (after thinking "mmm, looks cool") was that this could be used to detect a broken character encoding.
So, is this a better way to resolve potential problems with character encoding, or is it just a developer having fun with a ... |
What is the difference between eScience infrastructures and grid computing or distributed computing infrastructures? And what are some of their examples.
I can not distinguish them clearly. Is it how a grid is used make it an e-science platform?
|
In some cases, I want to use referentially transparent callables while coding in Python. My goals are to help with handling concurrency, memoization, unit testing, and verification of code correctness.
I want to write down clear rules for myself and other developers to follow that would ensure referential transparency.... |
I was always taught to strive for the highest Normal Form of database normalization, and we were taught Bernstein's Synthesis algorithm to achieve 3NF. This is all very well and it feels nice to normalize your database, knowing that fields can be modified while retaining consistency.
However, performance may suffer. Th... |
Sometimes when I start a small project (like an android app), I don´t know which approach will work out at the end, and I just go for one approach and give it a try. But if I never used this approach before (for a sort of application I´ve never programmed before) it is like stepping into unknown terrain. I don´t know w... |
What would be a good GPU to start learning CUDA on?
Are any GPUs unsuitable?
|
I'm working on a project that uses some icons that are under a Creative Commons license (ND) that forbids modification of the picture.
What can I do with this icons as a programmer?
Can I modify the looks of the image in the program as long as I don't change anything in the file that contains the icon?
Have I modified... |
Globally Unique Identifiers (GUID) are a grouped string with a specific format which I assume has a security reason.
A GUID is most commonly written in text as a sequence of hexadecimal
digits separated into five groups, such as:
3F2504E0-4F89-11D3-9A0C-0305E82C3301
Why aren't GUID/UUID strings just random bytes en... |
I've done quite a lot of javascript over the years and I'm using a more object-oriented approach, specifically with the module pattern. Which kind of approach do you do use to avoid a bigger code-base to becoming spaghetti. Are there any "best approach"?
|
Recently, I read that Facebook ads are moving towards retargeting and got interested deeper into subject. Essentially, retargeting is technique advertisers use that tracks purchase intent by putting cookies into your browser and when you visit another website within ad network you will see ad for item you "wanted to bu... |
I've just started work at a small start-up company who mainly uses PHP to develop their front-end apps. I had no prior PHP experience before joining, and this has led to my apps becoming large pieces of spaghetti code. I essentially started by adding code to implement an initial feature, and then continued to hack in m... |
I'm buying a few C++ books after moving from Java. I obviously want to read the reference manual from the man himself, though I cannot tell the difference between these two editions. The special edition is ten pages shorter than the third edition. However, the special edition is recommended over the third edition and i... |
I'm learning the 23 design patterns of the GoF.
I think I've found a way to understand and simplify how the Abstract Factory works but I would like to know if this is a correct assumption or if I am wrong.
What I want to know is if we can see the result of the Abstract Factory method as a matrix of possible products wh... |
I'm trying to return an object when mocking a parser class. This is the test code using PHPUnit 3.7
//set up the result object that I want to be returned from the call to parse method
$parserResult= new ParserResult();
$parserResult->setSegment('some string');
//set up the stub Parser object
... |
I have a set of numbers say : 1 1 2 8 5 6 6 7 8 8 4 2...
I want to detect the duplicate element in subsets(of given size say k) of the above numbers...
For example :
Consider the increasing subsets(for example consider k=3)
Subset 1 :{1,1,2}
Subset 2 :{1,2,8}
Subset 3 :{2,8,5}
Subset 4 :{8,5,6}
Subset 5 :{5,6,6}
Sub... |
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