instruction stringlengths 34 19.9k |
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Disclaimer: I'm aware of the questions How do I review my own code? and What advantages do continuous integration tools offer on a solo project?. I do feel that this question aims at a different set of answers though, as it is about a specific software, and not about general musings about the use of this or that practi... |
I'm working on a content synchronisation module for Drupal. There is a server module, which sits on ona website and exposes content via a web service. There is a also a client module, which sits on a different site and fetches and imports the content at regular intervals.
The server is created on Drupal 6. The clien... |
I'm currently choosing between two viable software designs/solutions. Solution 1 is easy to implement, but will lock some data in a proprietary format, and will be hard to change later. Solution 2 is hard to implement, but will be a lot easier to change later on.
Should I go YAGNI on this or should I incorporate the ex... |
It has happened in our team that our issue-tracker is down. Happens about once a week now (yes, wow), and there's not really much we can do to get it back up, since it's hosted by our client in a different timezone. It sometimes takes several hours for it to be operative again.
In the meanwhile, we can't really tell wh... |
This analysis makes sense, and states anything that avoids code duplication and simplifies maintenance speaks for a service layer.
What is the technical behavior?
When a service client references a service, does it do so at runtime, or does it happen at compile time?
When I change something in the service layer code,... |
Currently the company I work in gives each developer their own development virtual machine. On this machine (Windows 7) they install the entire stack of the product (minus database) this stack is normally spread amongst multiple machines of differing OS (although moving towards windows 2008 and 2008r2)
So when a develo... |
I am looking for a design for my application, here are the players(classes) involved.
struct Transform {
// Uses a matrix to transform the position.
// Also acts acts as the state of a Dialog.
Position transform(Position p);
//other methods.
};
struct Dialog {
// There are multiple dialog for the... |
I'm finding it difficult to frame this question so ... I want to execute code both before and after a method runs in PHP. There are, as far as I know, two ways to implement this:
Method One: pre and post methods
class Model
{
function find($id)
{
$this->_precode();
// ... do stuff
$this->post_code();
... |
I want to start/improve a culture of collective code ownership at my company but at a geographically distributed level... I'd say there is some current collective code-ownership mentality, but only at single geographical sites.
This is a follow-up to this question: What is the politically correct way of refactoring oth... |
For a school assignment we're supposed to make a Java implementation of a compressor/decompresser using Huffman's algorithm.
I've been reading a bit about it, specially this C++ tutorial: http://www.cprogramming.com/tutorial/computersciencetheory/huffman.html
In my program, I've been thinking about having Nodes that ha... |
I'm against compiled stuff going into version control, specially when it comes to compiled binaries, however, my principles are now in question after adding doxygen support for a project.
Should the hundreds of files generated by doxygen go into version control?, what is the recommended practice here?, I think the idea... |
I read a lot about vim and emacs and how they make you much more productive, but I didn't know which one to pick. Finally when I decided to teach myself common lisp, the decision was straight forward: everybody says that there's no better editor for common lisp, than emacs + slime. So I started with emacs tutorial and ... |
Often I need to apply some small fixes (to make them run on my environment) or even change some parts of the software (to tailor it to my needs) to software from outside. However this obviously creates problem with updating said software, even when it changes nothing related to my fix. It would be easier when the softw... |
I have to debug an issue which requires me to print all the values of a Value Object that is returned by a web service call. The Value object is a complex object in the sense, it has another object as its member which in turn has another object.
Printing all the values by using get methods is cumbersome. So I was wonde... |
I got the idea that basics of fuzzy logic is not that hard to grasp. And I got the feeling that someone might explain it to me in like 30 minutes. I understand neural networks and am able to re-create the famous Xor problem. And understand how to go just beyond it and create 3 layer networks of x nodes.
I'd like to und... |
So, I'm on my quest about creating a Java implementation of Huffman's algorithm for compressing/decompressing files (as you might know, ever since Why create a Huffman tree per character instead of a Node?) for a school assignment.
I now have a better understanding of how is this thing supposed to work. Wikipedia has a... |
In corporate in-house software development it is common for requirements to be determined through a formal process resulting in the creation of a number of requirements documents. In open source software development, this often seems to be absent. Hence, my question is: how are requirements determined in open source so... |
I was reading code of a java project where I found a class name like "UserSansXml". This class is dealing with user objects. I wanted to know the meaning of "sans".
|
We had a senior level interview candidate fail a nuance of the FizzBuzz question12.
I mean, really, utterly, completely, failed the question - not even close.
I even coached him through to thinking about using a loop and that 3 and 5 were really worth considering as special cases.
He blew it.
Just for QA purposes, I ga... |
So here's the confusion, let's say I declare an array of characters
char name[3] = "Sam";
and then I declare another array but this time using pointers
char * name = "Sam";
What's the difference between the two? I mean they work the same way in a program. Also how does the latter store the size of the stuff that som... |
In a current project we have setup the build so that we could mix Java and Scala. I would like to use more Scala in our code base to make the code more readable and concise. In the process also learn the language by handing over real features.
So I plan to use Scala for some classes to showcase its benefits and convi... |
MVVM Light and PRISM offer messenger to implement event system.
the approximate interface looks like the following one:
interface Messanger
{
void Subscribe<TMessageParam>(Action<TMessageParam> action);
void Unsubscribe<TMessageParam>(Action<TMessageParam> action);
void Unsubscribe<TMessageParam>(objec acti... |
I love gaming, I love games that allow modding and I love linux. But the fact that most games right now are targeted for windows (consoles aside), most mods and modding tools are also targeted for windows. There is a certain modder called Boris Vorontsov that makes a famous visual overhaul mod series called ENB.
What h... |
Objective C has a concept of a nil object which would accept any method call with any parameters without complaining and silently return another nil.
I have used something similar in Java using easymock and mockito for testing. Is there something similar for main line code? Is it even a good idea to have something lik... |
Despite having started learning programming with Pascal and C, after the jump to OO (C++, Java) I lost sense of the structured programming paradigm. I have started learning Lua and I have researched many tutorials, but all of them only cover basic operations and language features and capabilities. They feel more like a... |
To give a bit of background, lets say it's a generic results page, which is paginated so there are X results per page.
Generally to do this, I have two queries on the page:
to get the total number of results
to get the results, limiting by the correct page's resultset
However, recently I've been trying to cut down on... |
Possible Duplicate:
Verification of requirements question
Having asked but deleted the question as it was a bit misunderstood. If Quality Control is the actual testing, what are the commonest true quality assurance activities? I have read that verification (reviews, inspections..) but it does not make much sense to ... |
For example, I've GPL software. I'm the author of this GPL software. This GPL software has, between its code, Doxygen comments. These Doxygen comments are written to generate a CC-BY-SA html page, in order to upload this generated documentation in my project website under CC-BY-SA license.
But, is the Doxygen documenta... |
From Lafore's "Data Structures and Algorithms in Java":
(about insertion sort (which uses copy + shift instead of swap (used in bubble and selection sort)))
However, a copy isn’t as time-consuming as a swap, so for random data
this algo- rithm runs twice as fast as the bubble sort and faster than
the selectionsort... |
I have a codebase where the programmer tended to wrap things up in areas that don't make sense. For example, given an Error log we have you can log via
ErrorLog.Log(ex, "friendly message");
He added various other means to accomplish the exact same task. E.G.
SomeClass.Log(ex, "friendly message");
Which simply turns... |
I am about to design a video conversion service, that is scalable on the conversion side.
The architecture is as follows:
Webpage for video upload
When done, a message gets sent out to one of several resizing servers
The server locates the video, saves it on disk, and converts it to several formats and resolutions
The... |
So far I haven't been testing or learning how to test my java web applications.
If you do, what are the tools you need, and is it really necessary to test a web application if doesn't need scaling or it won't be handling big traffics and multi transactions?
What things should I test and what approaches should I take to... |
I am considering the technical viability of software that I want to write.
Is there a way that I can push data to a phone (iPhone or Andriod) via Bluetooth without pairing with it?
I want to be able to walk into a room and have a computer push data to my phone when I get a certain distance from it, or push data to any ... |
Often testing is regarded as a dynamic analysis of a software. Yet while writing my thesis, the reviewer noted to me that dynamic analysis is about analyzing the program behind the scenes - e.g. profiling and that it is not the same as testing because its "analysis" which looks inside and observes.
I know that "static ... |
Disclaimer: I don't want to start any flame war so there will not be no name of any framework mentioned.
I've been using quite many from the existing PHP frameworks and my experience in each case was similar: everything is nice a the beginning but in the moment you require something non standard you get into lot of pro... |
Assume I have a library A which is licensed under a two-clause Free BSD style license. Library A optionally depends on library B (the availability of the dependency is configured at build-time), which is licensed under the GPLv3.
If I distribute both bundled together, the license will need to be GPL. But am I still abl... |
On one hand there is an advice that says "Build one to throw away". Only after finishing a software system and seeing the end product we realize what went wrong in the design phase and understand how we should have really done it.
On the other hand there is the "second-system effect" which says that the second system o... |
I'm looking for a label to describe the practice of using human-based computation methods or other means of "faking" an algorithm for the sake of getting a product or demo off the ground quickly without spending the time to develop an technical/scalable/analytical solution? Eg: using Amazon Turk to count the number of... |
I'm working on a project right now and it's my first project using BDD. Up till now, the user stories have proven themselves a very valuable weapon to understand requirements and to specify the solution in a comprehensive, easy to understand language.
My question is this: now that my user stories are complete, how do I... |
I have at first sight a simple issue but can't wrap my head around on how to solve. I have an abstract class Compound. A Compound is made up of Structures. Then there is also a Container which holds 1 Compound.
A "special" implementation of Compound has Versions. For that type of Compound I want the Container to hold t... |
I am thinking about open sourcing my project, but I want to prohibit public hosting, so noone will put up an alternative website with my code on it, and compete with my site.
Internal networks, like libraries etc. would be welcome to use it.
Are you aware of such a license? I guess this would be even more restrictive t... |
I'm working on a review site, where there is a minor issue with almost duplicate reviews across items. Just a few words are changed. It would be very nice to be able to uncover these duplicates before they are approved by a moderator, and I'm hoping someone could chime in on the best strategy to get there.
The site is ... |
I recently got into using the HTML5-requestAnimationFrame-API a lot on animation-heavy websites, especially after seeing the Jank Busters talk. This seems to work pretty well and really improve performance in many cases.
Yet one question still persists for me: When wanting to use an animation that is NOT entirely calcu... |
I have a small webapp in java and I am adding the internationalization support, replacing texts with labels that are defined in dictionary files.
While some texts are obviously unique to each view (v.g. the html title), other refer to concepts from the model (v.g. a ticket, the location or status of such ticket, etc.)
... |
We have an ASP.NET web-application which has become difficult to maintain, and I'm looking for ideas on how to redesign it. It's an employee administration system which can be highly customized for each of our customers. Let me explain how it works now:
On the default page we have a menu where a user can select a task,... |
Since that every things is a file on the UNIX system. If I have a hardware, for example, a mouse, move from left corner to right corner, it should produce some kinds of file to communicate with the system.
So, if my assumption is correct, is this possible to do following things:
Capture the raw data, which is about m... |
I have seen various arguments against the DAO being called from the Controller class directly and also the DAO from the Model class.Infact I personally feel that if we are following the MVC pattern , the controller should not coupled with the DAO , but the Model class should invoke the DAO from within and controller sh... |
I'm currently working on a project that makes connection between different banks which send us information on which that project replies. A part of that project configures the different protocols that are used (not every bank uses the same protocol), this runs on a separate server. These processes all have unique id's... |
Not all languages support java-like annotations or C#-like attributes or code metadata in general, however that doesn't mean it is not possible to have in languages that don't have this.
An example is PHP with Stubbles and the Doctrine annotation library.
My question is, is there anything like this for C?, or are there... |
Recently I've been thinking about a general ExceptionHandler, that I could initialize once in my app context and inject it everywhere. The idea that it will have quite simple interface with just public void handle(Exception ex), and then according to exception type it should decide what to do, maybe just log it, or sho... |
Suppose, I have a class with a constant static final field. Then I want in certain situations that field to be different. It still can be final, because it should be initialized in constructor. My question is, what strategy I should use:
add this field value into the constructor
create 2 subclasses, replace original ... |
My use case is that I have a pipeline of independent, stand alone programs, that I want to execute in a certain order on specific pieces of data that are output from previous pipeline stages.
The pipeline is entirely linear and doesn't do anything in terms of alternate paths through the pipe.
I'm currently using SGE t... |
We are looking for a way to tokenize some text in the same or similar way as a search engine would do it.
The reason we are doing this is so that we can run some statistical analysis on the tokens. The language we are using is python, so would prefer a technique that works in that language, but could probably set somet... |
I was recently grabbing an auto generated TreeViewItem from a nested TreeView node in WPF, and I was using ItemContainerGenerator to get it in code behind. Then I thought to myself I'm certainly violating MVVM right now.
What are some other signs that someone is violating MVVM ?
|
I have inherited and now further develop a large application consisting of an ASP.NET application, VB6 and VB.NET application.
The software was poorly written. I am trying to refactor the code as I go along. The changes I am making are not live (they are contained in a folder on my development machine). This is prov... |
I have a somewhat simple, but specific, question about implementing the transport layer for a SIP UAC.
Do I expect the response to a request on the same socket that I sent the request on, or do I let the UDP or TCP listener pick up the response and then route it to the correct transaction from there? The RFC does not s... |
Say my company is going to build a complicated asp.net web form education system. One of the module is web based registration. To make it flexiable, we decide to use user control(ascx) with rule-engine (work flow) regulating all business logic behide them. Thus in future,for different clients, we can simply config basi... |
Consider the following generic class:
public class EntityChangeInfo<EntityType,TEntityKey>
{
ChangeTypeEnum ChangeType {get;}
TEntityKeyType EntityKey {get;}
}
Here EntityType unambiguously defines TEntityKeyType.
So it would be nice to have some kind of types' map:
public class EntityChangeInfo<EntityType,TE... |
I am having trouble understanding the OOP Polymorphic principl of Dynamic Binding ( Late Binding ) in Java. I looked for question pertaining to java, and wasn't sure if a overall answer to how dynamic binding works would pertain to Java Dynamic Binding, I wrote this question.
Given:
class Person
{
private String n... |
I'm considering developing a real-time multi-user game, and I want to gather some information about possibilities before I do some real development. I've thought about how best to ask the question, and for simplicity, the best way that occurred to me was to make an analogy to the field (or playground) game darebase.
In... |
I was referred here from stackoverflow as my question was apparently too broad.
I'm working on a template, and I know using CSS is preferred over HTML tables for positioning... But, is it acceptable to get the best of both worlds and use table-like styles on my divs? For example:
display: table;
This not only helps so... |
Are Scrum and XP comparable things or are they used for different things? what is the main features of each of them? how do they overlap?
I've been reading about both XP and Scrum over the past weeks and something is vague about them for me. Scrum does have a definitive official rulebook but for XP I'm not sure where t... |
I have gone through lots of theories about what is encapsulation and the three techniques of implementing it, which are Association, Aggregation and Composition.
What I found is:
Encapsulation
Encapsulation is the technique of making the fields in a class private and providing access to the fields via public methods. I... |
I am developing a web application and have the app deployed into Tomcat server. Tested on IE and Firefox and are working fine. Meaning when I close the browser and reopen the app, the data will be reset. When deploy to Websphere, the data is reset only in IE but Firefox don't. Meaning Firefox will cache the old data. I... |
Today we tried to introduce BDD in our software development process by having a specification workshop.
For this workshop we had 2 developers, 1 tester and 1 business analyst. The workshop lasted 1h30 and by the end of it we managed to figure out some BDD scenarios for our new feature.
We tried to focus on finding the ... |
I was wondering if anybody can point to a post, pdf, or excerpt of a book containing the rules for C++ variable life-times and best practices for passing and returning function parameters. Things like when to pass by value and by reference, how to share ownership, avoid unnecessary copies, etc. This is not for a partic... |
I'm building online examination system. I have designed to table, Question and GeneralExam. The table GeneralExam contains info about the exam like name, description, duration,...
Now I would like to design table GeneralQuestion, it will contain the ids of questions belongs to a general exam.
Currently, I have two idea... |
As my current Java projects grow bigger and bigger, I feel a likewise growing need to insert debug output in several points of my code.
To enable or disable this feature appropriately, depending on the opening or closure of the test sessions, I usually put a private static final boolean DEBUG = false at the beginning o... |
My question, at the bottom line, is what is the appropriate(best) way to manage our connection towards MySQL db with C#.
Well, currently I'm working on some C# (WinForms type) <-> MySQL application and I've been looking at Server Connections in MySQL Administrator, been witness of execution of my MySQL queries, connec... |
We are starting an Agile project, and the product owner has made a start adding user stories to the product backlog (mostly epics at this stage).
Who would be responsible for breaking down epics into smaller user stories - is it left to the product owner, or would you expect the rest of the team to be involved (bearing... |
I'm having some trouble finding a proper solution to the following architecture problem.
In our setting (sketched below) we have 2 data sources, where data source A is the primary source for items of type Foo. A secondary data source exists which can be used to retrieve additional information on a Foo; however this in... |
I am currently using the Google-Gson library to convert Java objects into JSON inside a web service.
Once the object has been converted to JSON, it is returned to the client to be converted into a JSON object using the JavaScript eval() function. Is the character escaping provided by the Gson library enough to ensure t... |
We're currently reconsidering technologies and frameworks to get more agile with "simple" RMS CRUD-based projects. In short, short-living things like this
Right now we have a custom extension on top of SmartGWT but after some time it has proven not to be flexible enough.
I also personally dislike the java-js compilatio... |
I'm a programmer but also have worked as an archivist. As archivist it's a lot about keeping data.
I often get into arguments with colleagues when it comes to operations on data. I don't like the U and the D in CRUD too much. Rather then update a record I prefer to add a new one and have a reference to the old record. ... |
I want to write a test for a method that accesses a database such as following.
public class MyClass{
public String getAddress(Int id){
String query = "Select * from Address where id="+id;
//some additional statements
resultSet = statement.executeQuery();
return result.ge... |
I work at a large company where technical people fall roughly in one of these categories:
A developer on a scrum team who develops for a single product and maybe works with other teams that are closely related to the product.
An architect who is more of a consultant on multiple teams (5-6) and tries to recognize com... |
I'm tasked with developing an SSO system, and was guided towards using the SAML spec. After some research I think understand the interaction between a Service Provider and an ID Provider and how a user's identity is confirmed. But what happens when I redirect the user to another Service Provider? How do I ascertain the... |
Assume that I planned to write a class that worked something like this:
public class GameCharacter {
private Collection<CharacterEffect> _collection;
public void Add(CharacterEffect e) { ... }
public void Remove(CharacterEffect e) { ... }
public void Contains(CharacterEffect e) { ... }
}
When added an... |
I am bit frustrated at the lack of information about this online. Here is the issue:
I am in charge of creating a iOS application which sends sound data back and forth between the server and the app. The Audio is in small files and thus does not need to be streamed over, but rather it can be sent. Right now, I am using... |
I am confused about it.
I can use lucene to create index and run query against file system.
I can find any particular file very fast, if I can provide a primary key, in this case, directory path and filename act as primary key.
It looks very much like a NoSQL.
|
I am a good programmer, or so I thought before. I always love to program. And I want to learn many things about programming to make me a better programmer. I studied programming for 1 year and now I am working as a programmer for almost 2 years. So in short, I have almost 3 years programming experience.
Our team is com... |
Assume these threads run in single core cpu. As a cpu only run one instruction in one cycle. That is said, even thought they share the cpu resource. but the computer ensure that one time one instruction. So is the lock un-necessary for multiplethreading?
|
Based on answers I have received here and then confirmed in some authoritative sources (not ISTQB which seems to be too vague), there are 3 activities:
Static analysis
Dynamic analysis
Testing
But is there any reason why we cannot combine all of that as "testing"? I mean, even a dynamic analysis review of a pro... |
I'm creating a demo web app in html in order for people to physically see and comment on the app prior to committing to a proper build.
Whilst the proper app will be database driven, my demo is just standard html with some JavaScript effects.
What I do want to demonstrate is that different user group will see different... |
I'm writing a c10k-style service and am trying to evaluate Clojure's performance. Can Clojure agents handle this scale of concurrency with its thread-based agents? Other high performance systems seem to be moving towards async-IO/events/greenlets, albeit at a seemingly higher complexity cost.
Suppose there are 10,00... |
To integrate with other executables, a executable may launch another executable and capture its output from stdout.
But most programs writes the output message to stdout in custom format and usually in human readable format.
So it requires the system integrator to write a function to parse the output, which is consider... |
Looking at this page that aggregates the current NoSQL landscape, one can see that the majority of these projects are written in Java.
Databases are complex systems software dealing with the file system, and so C/C++ would be a better choice than Java for this. (that's my thinking which might be flawed)
Secondly, datab... |
Given a web application running across 10+ servers, what techniques have you put in place for doing things like altering the state of your website so that you can implement certain features.
For instance, you might want to:
Restrict Logins/Disable Certain Features
Turn Site to "Read Only"
Turn Site to Single "Mainte... |
Why don't we have a lot of good web-based IDEs? Which aspects of the system make it difficult for IDE to be implemented as a web application?
|
I read on various sites about licenses.
I did just put the license type in the header file (in my case a javascript file, open-source):
/*
* "codeName" "version"
* http://officialsite.com/
*
* Copyright 2012 "codeName"
* Released under the "LICENSE NAME" license
* http://officialsite.com/LICENSE NAME
*/
javasc... |
I was wondering if ffmpeg supported gpu acceleration. I was reading on their websites and came across contradicting information.
http://www.ffmpeg.org/general.html#Video-Codecs
-H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration)
http://ffmpeg.org/trac/ffmpeg/wiki/x264EncodingGuide
-Will a graphics card mak... |
As the jdk doc said, ConcurrentHashMap is thread safe and it doesn't block multiple thread read. It is not necessary to doubt that since it was under many and restricted test. But I just curious how to tell and write code to verify that.
Edited: to be more precisely
how to keep read consitent without read block
does ... |
I have been learning Objective-C, noting that different books and examples use differing conventions for the location of the star (*) when naming reference variables:
MyType* x;
MyType *y;
MyType*z; // this also works
I see the first two used interchangeably, and sometimes in the same code I've seen differing uses of ... |
I am learning OpenGL API bit by bit and also develop my own C++ framework library for effectively using them. Recently came across Blender software which is used for graphics creation and is in turn written in OpenGL itself.
For my part time hobby of graphics learning, I want to just create small-small movie or video s... |
i'm looking for a framework to build a webserver. This server will be used to manage webservices. huge amount of client may be able to connect to principally set data which will populate a noSQL DB. we work with python and naturally we would like a python framework. i looked at bottle, gevent, twisted and tornado but i... |
In particular, this is about game extensions written in lua (luajit-2.0). I was contemplating whether I should restrict what these scripts can do, and arrived at the conclusion that I probably shouldn't:
It's hard to get right. Sounds silly, but chances are my sandbox is gonna end up leaky anyways.
The only benefit I ... |
I'm currently working on a project where I'm writing the firmware for an electronic system in C, and have been asked to produce documentation on the development/evolution of the software for the embedded devices. Having developed software in the object oriented paradigm I know to use UML to document the software such a... |
I am a learning algorithm analysis and came across a analysis tool for understanding the running time of an algorithm with widely varying performance which is called as amortization.
The autor quotes
An array with upper bound of n elements, with a fixed bound N, on it size. Operation clear takes O(n) time, since we s... |
I am a bit confusing and I need your help to undertand my problem.
I have developed a web application (PHP, JQuery) for one of my customer.
Recently, my customer ask me to add a new feature permitting PDF to JPG conversion.
After web browsing, I have discovered that iMagick (Apache licence) PHP extension with GhostSc... |
I am a very mathematically oriented programmer, and I happen to be doing a lot of java script these days. I am really disappointed in the math aspects of javascript:
the Math object is almost a joke because it has so few methods
you can't use ^ for exponentiation
the + operator is very limited, you cant add array's o... |
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