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Polymorphism: the core of object oriented programming. Most modern languages have some concept of interfaces, virtual functions, and classes. Though each language differs in details,
New languages try to improve the lives of programmers by simplifying some aspect of programming. Many make bold claims about eliminating certain types of errors,
Ultimately any program must communicate with the outside world. Be it showing the user data or sending a text based protocol, the need to format
In the world of new languages it seems like garbage collection is standard feature. A way for the runtime to locate unused bits of memory
We all know that operations in a computer happen one after the other. Having multiple CPUs and instruction reordering tends to obfuscate the issue. Technically
A bane of programming is repeating code and dealing with a myriad of types. The natural response to type overload is to limit the number
The ideal programming language should not leak resources. Resources include not just memory, but also files, network connections, device locks, sound buffers, and anything needing
We’ve all heard that a CPU may reorder access to memory. Yet if you’ve looked further you’d also see that cache coherence ensures the memory
Multi-threaded programming calls for semaphores, synchronized blocks, mutexes, or whatever your language happens to call them. Most of us basically understand why we need them:
In the grand scheme of execution costs function calls come very close to the bottom of the list. They don’t cost very much at all
Whether C++, Java or any other language, we are all familiar with instantiating an object. In those aforementioned languages the operator new happens to do
As high level languages become more abstract, and offer more convenience features, it is easy to lose track of what the computer is actually doing.
Is overloading a bad thing? Despite a wide variety of new languages supporting some form of it I continue to find articles that say overloading
Recently I started a new project and was surprised to hear my colleague express his desire to use spaces for indentation. I assumed this problem
Working with a bit of code last week I stumbled into something unusual. I was working on something quite basic so kind of surprised when
Each time I start a new project I find myself looking at the latest batch of frameworks. Lately those are web frameworks, such as CakePHP,
Storing user credentials is one of the key roadblocks in creating a sessionless web application. Somehow you need to safely identify the user without storing
One of the most common testing tools is equivalence classes. Most testers generally understand what they are and how to use them. They allow us to do full coverage of an application without needing to test every possible permutation of input. Yet, despite their popularity I find that the two most important, the two most vital classes, get overlooked. Here I’ll cover these two classes and their implications on testing.
Despite a huge push for more testing of applications, online or off, there is actually not a lot of standardized systems for doing it. This is not to say there aren’t a lot of standard techniques, there simply lacks unifying by-the-book approaches which yield solid results. A lack of standards should however be no reason not to test your web application. Yet without clear guidance most providers kind of just try things thereby wasting a lot of effort and still ending up with a poor quality product. Here is a general overview of the five basic approaches to testing.