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I've come across two pointer declarations that I'm having trouble understanding. My understanding of precedence rules goes something like this: Operator Precedence Associativity (), [ ] 1 Left to Right *, identifier 2 Right to Left Da...
I find that I start projects and, due to my lack of experience, find that old database structures and huge blocks of code are inefficient and memory-costly. However, by the time I realize a re-design of the entire project is needed, the project has grown to such a size that it is simply too late to go back and modify t...
Code Retreat is an all-day training event that focuses on the fundamentals of software development. There's a "global" code retreat day coming up, and I'm looking forward to it. That said, I've been to one before and have to say there was a huge amount of chaos... which is fine. One thing that I still don't get is why ...
I have created a program that restricts the mouse to a certain region based on a black/white bitmap. The program is 100% functional as-is, but uses an inaccurate, albeit fast, algorithm for repositioning the mouse when it strays outside the area. Currently, when the mouse moves outside the area, basically what happens...
I would like to explain CQRS to my team of developers. I just can't figure out how to explain it in the simplest way so they can implement the pattern rapidly without any others frameworks. I've read a lot of resources including video and articles but I don't find how to implement CQRS without using others patterns lik...
I am just getting started with unit testing but I am not sure if I really understand the point of it all. I read tutorials and books on it all, but I just have two quick questions: I thought the purpose of unit testing is to test code we actually wrote. However, to me it seems that in order to just be able to run the...
Given two interface definitions ... IOmniWorkItem = interface ['{3CE2762F-B7A3-4490-BF22-2109C042EAD1}'] function GetData: TOmniValue; function GetResult: TOmniValue; function GetUniqueID: int64; procedure SetResult(const value: TOmniValue); // procedure Cancel; function DetachException: Exception; fu...
Are there any 100% pure languages (as I describe in the Stack Overflow post) out there already and if so, could they feasibly be used to actually do stuff? i.e. do they have an implementation? I'm not looking for raw maths on paper/Pure lambda calculus. However Pure lambda calculus with a compiler or a runtime system a...
Typically, computer memory is always linear. So is the term non linear used for a data structure in a logical sense? If so, to logically achieve non linearity in a linear computer memory, we use pointers. Is that right? In that case, if pointers are virtual implementations for achieving non linearity, why would a data ...
May be someone has a piece of code, that would work as a test for debugging abilities? We will give ability to use Visual Studio, so it should be hardly solvable by doing manual tracing and show us, that candidate is really good at debugging.
I run a middle size community and some time ago I started to develop social capabilities such as follow, status update, wall etc. For some reason i thought that Cassandra was the right tool for the job so I looked online for a Cassandra developer and I found a very talented one. Unluckily in the midst of the developmen...
which is the best way to correlate and group similar articles? I mean something like Google News, which groups under a single topic different articles from different sources. I'm not interested in something much sophisticated, it is just important to be efficient in terms of speed and resources needed. I can live with...
I am sure everybody has had his/her share of regex woes. We have a big application with around 30 developers working on a mvc3 web application , and the two fold regex validations (front-end and server side) is becoming a nightmare to maintain. Is there a way to keep all the regexes in one place ? so that they can be u...
Someday, my leader told me that don't reinvent the wheels, use framework built-in classes. (with a serious mood) when I implement some algorithm has been supported by .NET fx. And seriously, I didn't know about these support before, cause this is the first time I work with .NET). So I have this questions. For example, ...
I have read that Node.js is a server-side javascript enviroment. This has put few thought and tinkers in my mind. Can we develop a complete data-drivent web application utilizing just JavaScript (along with node.js), HTML5 and CSS? Do we still need to use some server-side scripting language (e.g. C#, PHP)? In case we ...
I have the need to create a table with a unique id as the PK. The ID is a surrogate key. Originally, I had a natural key, but requirement changes have undermined this idea. Then, I considered adding an auto incrementing identity. But, this presents problems. A. I can't specify my own ID. B. The ID's are difficu...
Possible Duplicate: When do I need to use a framework? I feel fairly competent at creating a number of applications in PHP and thus far have not seen the need to use one of the popular frameworks (CakePHP, Zend, etc). As a programmer it gives me comfort to know exactly what my code is doing and I suppose before now ...
I'm just wondering what would be the best strategy to publish an application on the Android Market. If you have a free and paid version you have two codes to update (I know it will be 99% the same but still) and besides all the popular paid apps are quite easy to find for "free" in "alternative" markets. Also if you ha...
I just had a discussion with a colleague about the Product Owner role: In a project where a customer organization has brought in a sofware developing organization (supplier), can the role of Product Owner be successfully held by the customer organization, or should it always be held by the supplier? I always imagined,...
I'm currently at a contract position and am looking to add to the documentation of the projects I worked on, to assist the next hiree taking over my projects. The documentation I received was overly technical (i.e. references code right away, references replacing certain values on certain lines, no high level descripti...
I would like to develop an application for a group of people to use. I have decided to develop using python, but I am thinking of using python 2.X or python 3.X. If I use python 2.X, I need to upgrade it for the future... But it is more mature, and has many tools and libraries. If I develop using 3.X, I don't need to t...
How effective are automated round-trip tools for UML modeling? Do they help in coding quick, clean, efficient code? In what ways do these tools fit into the Agile methodology?
Let's say I have a method: public void DoSomething(ISomeInterface someObject) { if(someObject == null) throw new ArgumentNullException("someObject"); someObject.DoThisOrThat(); } I've been trained to believe that throwing the ArgumentNullException is "correct" but an "Object reference not set to an instance o...
I am interested in learning concurrent programming, focusing on the application/user level (not system programming). I am looking for a modern high level programming language that provides intuitive abstractions for writing concurrent applications. I want to focus on languages that increase productivity and hide the co...
I have been programming ROR for about a year now, and I think I am ready to start working on a project for someone else. The problem is that job postings for contractors don't really tell you which specific tasks you should be able to do at different experience levels (in rails and other technologies), so I don't know ...
If I'm writing a web application that uses the model 2 architecture, is it possible to use the Google Guice framework (or really any IoC container)? The reason I ask this question is because everything I've researched about DI, IoC, et cetera always uses Spring, Hibernate or some other framework/container in their exam...
I'm at the tail end of a large project (around 5 months of my time, > 60,000 lines of code) on which I was the only developer. The specification documents for the project were designed well early on, but as always happens during development, some things have changed. For example: Bugs were discovered and fixed in wa...
I've written a function that asks a user for input until user enters a positive integer (a natural number). Somebody said I shouldn't throw and catch exceptions in my function and should let the caller of my function handle them. I wonder what other developers think about this. I'm also probably misusing exceptions in ...
Many, but not all, HTML layout problems can be solved with CSS alone. For those that can't, JQuery (on document load) has become very popular.* As a result of its ease, many developers are quick to use JQuery or Javascript for layout and style — even without understanding whether or not the problem can be solved with C...
I have a pet project that I am planning to release as open source at some point in the not-too-distant future. A couple of the files use or are mostly code that was taken from a project released under the New BSD License. While I have changed it to fit my needs and added some small stuff, the algorithm and the function...
Maybe I'm alone in this, but few things annoy me like people indenting using spaces rather than tabs. How is typing SpaceSpaceSpaceSpace easier and more intuitive than typing Tab? Sure, tab width is variable, but it's much more indicative of indentation space than spaces. The same thing goes for backspacing; backspace ...
To get off my noob status i am following the Learn python the hard way course. I really like it but at one point it says make a bin directory. In all games and other programs i saw to a bin directory but what does it do?
We're trying to move data from our bloated Service layer into our Domain layer using a DDD approach. We currently have a lot of business logic in our services, which is spread out all over the place and doesn't benefit from inheritance. We have a central Domain class which is the focus of most of our work - a Trade. Th...
Is there any cons of making your employees use open-source programs in your company? I am planning to start a bussiness and I wonder why companies usually work with proprietary software, as Microsoft Word to quote the most famous one. Why do not they use Open Office (or Libre Office) etc.? From my point of view, you ...
I'm currently developing a web application, that provides some 'service' to the user. The user will have to select a 'plan' according to which she/he will be allowed to perform application specific actions but up to a limit defined by the plan. A Plan will also limit access to certain features, which will not be availa...
I have a couple of FOSS projects. They can be a bit of a pain to get running unless you've got dependencies in place already, which I figure is par for the course for FOSS projects. We know that each free operating system out there has its own package management systems. A few of them, such as homebrew on Mac OS or AUR...
I've been reading a bit about CI servers like Jenkins and I'm wondering: at which point is it useful? Because surely for a tiny project where you'd have only 5 classes and 10 unit tests, there's no real need. Here we've got about 1500 unit tests and they pass (on old Core 2 Duo workstations) in about 90 seconds (becaus...
I have an already existing application in Silverlight 4.0 with WCF services. Now what I want is a workflow to be integrated along with the above application. The workflow will be a simple approval workflow i.e sequential workflow. Can any one suggest some links or a solution?
I work in a Web Application where users are allowed to upload files. They can retrieve and view those files at a later point in time. A solution that user works with can have multiple attachments but the click to view only one at a time. No version maintenance. Users can delete those files. No soft delete. The files ar...
I often fight with myself on whether to put certain keys in my web.config or in a Constants.cs class or something like this. For example if I wanted to store application specific keys for whatever the case may be..I could store it and grab it from my web config via custom keys or consume it by referencing a constant i...
I see very often people using term binaries in different context. What are binaries? Collection on binary files, installation files, .dll files or what? Or is it just an general term for some collection of files on disk?
I have two classes (named MyFoo1 and MyFoo2) that share some common functionality. So far, it does not seem like I need any polymorphic inheritance but, at this point, I am considering the following options: Have the common functionality in a utility class. Both of these classes call these methods from that utility cl...
We have the following SVN structure. Projects: Our work Clients: Projects for clients, needs to be different Shared: Shared libraries we created Docs: Documents explaining how software development flows within the company (has nothing to do with my question anyway) Where should we put the external libraries? Let's sa...
I just started learning Python, and I'd like to get some more context on the language. I realize that, in many cases, Python is a slow language relative to C or C++. Thus, Python is probably not the best choice for applications that need to run as quickly as possible. Outside of this, it seems like Python is a great...
I have found an open source library that can work fine with my project, but I have noted that It's not frequently updated and I'm afraid of not having the necessary support. Is the frequency of updates a proper criterion for choosing an open source library rather than another?
In my application requests are processed by objects of Processor-derived classes, something like CreateItemProcessor or MoveItemToGroupProcessor. Base Processor class implements most of common processing logic, and derived ones make some specific business logic related tasks. An object of a certain processor type is cr...
When our application doesn't work the way we expect it to (e.g. throws exceptions etc.), I usually insert a lot of debug code at certain points in the application in order to get a better overview of what exactly is going on, what the values for certain objects are, to better trace where this error is triggered from. T...
Is it possible to develop a functional language based on PHP opcode? Similar to Scala/bytecode or F#/CIL Has somebody done this already?
I've been tasked with developing requirements and specifications for a project our group is starting. I realized that I don't know the difference; a Google search just confused me more -- it seems some people say that specifications are requirements, but at a lower level.
For the sake of argument here's a sample function that prints contents of a given file line-by-line. Version 1: void printFile(const string & filePath) { fstream file(filePath, ios::in); string line; while (std::getline(file, line)) { cout << line << endl; } } I know it is recommended that functions do one...
I was looking on the internet for common interview questions. I came upon one that was about finding the occurrences of certain characters in an array. The solution written right below it was in my opinion very elegant. But then another thought came to my mind that, this solution is way better than what came to my mind...
I do not understand the "bridge" design pattern at all. I have gone through various web sites, but they haven't helped. Can anybody help me in understanding this?
I read some code of a colleague and found that he often catches various exceptions and then always throws a 'RuntimeException' instead. I always thought this is very bad practice. Am I wrong?
I don't like issue tracking systems because: It takes too much time to describe issues in it. This discourage its usage. You create a place to keep your bugs. And if there is a place for them, people usually don't care too much about fixing a bug cause they can put it there so that someday someone can fix it (or not)....
We have a Java-based application that, to date, we've been distributing as a tarball with instructions for deploying. It's mostly self-contained so deployment is fairly straight-forward: Untar on the disk you'd like it to live on; Make sure Java is in your path and a suitable distro and version; Verify ownership and g...
In C# projects, we frequently group small and tightly related classes into the same .cs file. This practice reduces the friction of dealing with a myriad of files containing close to no actual code. Yet, is there an established practice to name the file that contains multiple classes?
I'm getting into scrum and TDD and I think I have some confusion which I'd like to get your feedback about. Let's assume I have a user-story in my backlog, in order for me to start developing it as part of TDD I need to have requirements, right so far? Is it true to say that the product manager and the QA should be r...
Is there anyone out there who has mastered to retrieve some data programmatically from Eloqua? First of all, I'm more or less a newbie, as far as JAVA. I can follow tutorials, take directions and will Google till my fingers bleed. I understand the basics and am slightly familiar with OOP. My main problem is that I have...
First, I am using the TFS 2010 SCRUM template. I am wondering if this is a bad idea... I started defining a PBI for User Interface Elements. Basically, this will hold all the tasks that developers will be assigned when developing UI elements for a web application. Since this has to do with user interaction and usabil...
I'm reading es5 these days and find that [[configurable]] attribute in some built-in properties of global object is set to true which means we can delete these properties. For example: the join method of Array.prototype object have attributes {[[Writable]]:true, [[Enumerable]]: false, [[Configurable]]: true} So we ca...
I asked this question on SO but was suggested to try here. So here it goes: My understanding of Javascript so far has been that it is a client-side language that capture events and makes a web-page dynamic. But on reading the comparison between MongoDB and CouchDB I noticed that both are using Javascript. This makes me...
Occasionally there is the 1% of code that is computationally intensive enough that needs the heaviest kind of low-level optimization. Examples are video processing, image processing, and all kinds of signal processing, in general. The goals are to document, and to teach the optimization techniques, so that the code do...
First, a little background. I'm a .Net developer (C#) and have over 5 years experience in both web development and desktop applications. I've been wanting to look into iPhone development for some time now, but for one reason or another always got side tracked. I finally have a potential project on the horizon, and I'm ...
I have a project which uses a large number of LGPL, Artistic and other open-source licensed libraries. What's the canonical (i.e. the "standard") way of acknowledging multiple sources in a single project download? Also, some of the sources I've used are from sites where using the code is okay, but publishing the source...
I'm in the process of refactoring a fairly large web app. One of the major issues is inconsistent error handling and I'm trying to come up with a sensible strategy. I've created a custom error handler, via set_error_handler that essentially turns PHP errors in ErrorExceptions and a custom base exception class, that di...
I'm on the way developing an application which requires a kind of dynamic database, So this is what I want, This is the for reading the details of a class, the number of variables and methods will only be known at run-time, and I have to create a number of classes like this. In the above scenario,how can I design a da...
Background I'm working on an ongoing C# project. I'm not a C# programmer, primarily a C++ programmer. So I was assigned basically easy and refactoring tasks. The code is a mess. It's a huge project. As our customer demanded frequent releases with new features and bug fixes, all other developers were forced to take brut...
EDIT: Maybe I should ask the question in a different way. in light of ammoQ's comment, I realize that I've done something like suggested which is kind of a fix and it is fine by me. But I still want to learn for the future, so that if I develop new code for operations similar to this, I can design it correctly from the...
I've recently quit my full time developing job at mega-corp, and I decided that I'll look for a part time job. Since then I've talked to half a dozen potential employers, and every one of them had the same reaction when I said the magic words "part-time" - they all closed up and became suspicious. Now, I understand tha...
I wanted to ask you people, in which cases it makes sense to unit test statically typed functional code, as written in haskell, scala, ocaml, nemerle, f# or haXe (the last is what I am really interested in, but I wanted to tap into the knowledge of the bigger communities). I ask this because from my understanding: One...
Are there any resources out there on how to architect large, industrial strength Python projects? I'd like to start on an ambitious personal project, but I'm not really sure how to architect it and what practices to put into place to make the project successful. Are there any resources out there discussing how to make...
I read this thread on programmers today and thought that looked like a really elegant way of coding. I would like to discover more neat methods of coding. What are the best ways of discovering new elegant ways of coding? (Im already aware of the standard design patterns)
I'm in a bit of a disagreement with a more experienced developer on this issue, and wondering what others think about it; our environment is Java, EJB 3, services, etc. The code I wrote calls a service to get things and to create things. The problem I ran into was that I got null pointer exceptions that didn't make sen...
I am a programmer that can code. But I find that I can get thing done, but not get thing do well or like most of the open source communities do. Well, I use some of the library from git hub. I find most of the programme is well structure. Also, a read me. My question are: Is that any common file structure or naming c...
We have unfinished tasks which are part of stories in sprint. They are not accepted by the PO. They must be included for the next planning of sprint. Obviously the stories must be moved, but what about the tasks? Shall they be reopened and moved for the next sprint within the stories or not?
When one business acquires another, they use a Memorandum of Understanding, which is basically an agreement outlining the duties of each party, etc. I am about to begin a massive web development project for a client - What is the equivalent agreement I would use with them?
I am asking this because I have seen places where, whoever coded initially had provided proper comments, but later on modifications were made to the code but the comments were left untouched. I remember reading somewhere " Don't get suckered in by the comments, debug only code". So is it a good/ relevant/ practical id...
I'm currently evaluating license management solutions for our customized and project-based applications, which are supported by a single server in the intranet of the customer. The applications use common functionality provided by the server (session handling, data synchronization, management capabilities, etc) and are...
As you develop as a programmer, software developer, or coder, IMHO, you begin to see different (best or worst) practices, different algorithms, and "more than one way to do it". Seeing this code can be a great learning experience for you, even though you did not write the code. But is doing this only going to confuse y...
I want to build a SyncML parsing library (no UI) which should be able to build up messages based on information provided by the host application, fed in by the library's methods. Also, the library should to be able to do callbacks to methods in the host application. I want to be able to compile this and have it availab...
I am 12 years old and have mastered the basics of Python with Learn Python The Hard Way by Zed Shaw (I think) and it has done me well. What should I do next? Do you have any recommended books or good website tutorials? What do you need to know before learning C?
How do you keep everything straight as you trace deeply into a piece of software through multiple method calls, object constructors, object factories, and even spring wiring. I find that 4 or 5 method calls are easy to keep in my head, but once you are going to 8 or 9 calls deep it gets hard to keep track of everythin...
Let's say we have a codebase that is used for many different costumers, and we have some code in it that is relevant only for costumers of type X. Is it better to use preprocessor directives to include this code only in costumer of type X, or to use if statements? To be clearer: // some code #if TYPE_X_COSTUMER = 1 //...
Trailing whitespace is enough of a problem for programmers that editors like Emacs have special functions that highlight it or get rid of it automatically, and many coding standards require you to eliminate all instances of it. I'm not entirely sure why though. I can think of one practical reason of avoiding unnecessar...
Basically I have a team class, which has an array list that store the players in. In the driver class there's an arraylist that stores the teams. Anyhow I've worked out how to add a player to a specific team and likewise remove a player from said team. Where I'm hitting problems is when I try to transfer one player to ...
I was testing PHP rand function to write on a image. Of course the output shows that it's not so random. The code I used: <?php header('Content-Type: image/png'); $lenght = 512; $im = imagecreatetruecolor($lenght, $lenght); $blue = imagecolorallocate($im, 0, 255, 255); for ($y = 0; $y < $lenght; $y++) { for ($x = ...
I just ran into an "interesting problem", which I would like your opinion about: I am developing a system and for many reasons (meaning: abstraction, technology independence, etc) we create our own types for exchanging information. For instance: if there is a method which is called SendEmail and is invoked by the busin...
I read the Wikipedia articles on both, and both are not mentioned together. Also, the purpose of OSGi is not Dependency Injection. Yet, what an OSGi container like Felix does matches the description for DI.
I'm working on a project where we have the source control set up to automatically write notes in the bug tracker. We simply write the bug issue ID in the commit message and the commit message is added as a note to the bug tracker. I can see only a few downsides for this practice. If sometime in the future the source co...
In my experience, the "Model" in MVC is often not really a single layer. I would regularly have "backend" models and "frontend" models, where the backend ones would have properties that I want to hide from the UI code, and the frontend ones have derived or composite properties which are more meaningful in the context o...
I have to work on some docs, I need a software that can trace all the modifications that I will make to a specific file or project (group of files): is there something like that? The important thing is that I have to do that with a single machine so I do not need a distributed solution, I only have to work with txt fil...
I have been writing an open standard for a protocol I am developing. As far as writing concerns I have it under control. But the main question is where can I publish such document. I have been searching on the internet and didn't find such site where I could upload a TXT or PDF file. I have no intention of keeping secr...
I have a very large SVN repository (working copy of several gb) that has just reached its 20,000th checkin. As a bit of an interesting statistic for our team (and to partly celebrate our 20,000th checkin) I'd like to make a graph showing which folders in the repository have had the most checkins. Is there any way to do...
I am writing a rules/eligibility Module. I have 2 sets of data, one is the customer data and the other is the customer products data. Customer data to Customer products data is one to many. Now I have to go through a set of Eligibility rules for each of this Customer product data. For each customer products data, I c...
Actually I'm dealing with a trouble in my system, I have to delivery the system to clients and it was built in PHP, JS, ShellScript and SQL. I would like to encrypt the code or obfuscate it from eyes of others! Then someone from the community told me about building my own PHP extension, it sounds to me as a great idea...
I'm taking financial mathematics as an elective, and I'm working with real life finance industry worker type people. It's actually kind of fun. When I pulled out a macbook at one of our meetings, I had four lifelong windows users look at me like I had three heads. Anyway, I'm helping with design and simulation of our ...
I want to know the approach in developing big complex application regardless of which programming language to use. I want to know how developers make such big applications such as internet banking, API's and big database management application. How should one approach to make such applications. I have only 1 year prog...
I'm designing a carpool system (drivers can publish their routes and passengers can subscribe to them) with WebServices(axis2) and Android clients (ksoap2). I have been having problems with the logical architecture of the system and I wondered if this architecture is fine. And another question: for that architecture ...
I need to learn how databases work in order to use them more efficiently, and my way of learning is by doing. I want to create my own database system. I am not referring to creating a pseudo-database that would use query to parse files; this would simply be a filesystem interface with a query language. I am talking abo...
if a JQuery plugin is released under the CC BY-SA 3.0 license, can it be used as part of a closed source commercial web application which is not redistributed, just accessible on the web?