Tag Archives: Computer programming

JavaScript Performance: for vs. while

Posted on January 24, 2012 by Stoimen

JavaScript Loops If you have read some preformance tests on JavaScript loops, you may have heard that “while” is faster than “for”. However the question is how faster is “while”? Here are some results, but first let’s take a look … Continue reading →

Posted in javascript | Tagged Computer programming, Computing, Control flow, firebug, Increment, javascript, JavaScript programming language, Software engineering, software/hardware, Technology/Internet, While loop | 3 Comments

Object Cloning and Passing by Reference in PHP

Posted on October 27, 2011 by Stoimen

In PHP everything’s a reference! I’ve heard it so many times in my practice. No, these words are too strong! Let’s see some examples. Passing Parameters by Reference Clearly when we pass parameters to a function it’s not by reference. … Continue reading →

Posted in micro tutorial, PHP | Tagged C, Clone, Cloning, Comparison of programming languages, Computer programming, Computing, Curly bracket programming languages, Java programming language, PHP, PHP programming language, Procedural programming languages, Scripting languages, Software engineering | 3 Comments

Does JavaScript undefined Equals undefined?

Posted on October 21, 2011 by Stoimen

Weird JS As you know sometimes JavaScript can be weird. Let’s see the following example and let’s try to answer the question: does “undefined” equals “undefined”. What do I mean? First take a look at the following code. var a; … Continue reading →

Posted in javascript | Tagged Computer programming, Computing, Curly bracket programming languages, ecmascript, javascript, JavaScript programming language, js, Procedural programming languages, Scripting languages, Software engineering, tips, tricks, typeof, undefined | 6 Comments

Some Notes on the Object-oriented Model of PHP

Posted on October 20, 2011 by Stoimen

PHP 5 introduces interfaces and abstract classes. To become a little clearer, let us see their definitions. Interfaces Object interfaces allow you to create code which specifies which methods a class must implement, without having to define how these methods … Continue reading →

Posted in PHP | Tagged abstract classes, Abstract type, C, Class, Computer programming, Computing, Education, experiment, how-to, iheritance, Interfaces, Java programming language, Method, micro tutorial, Object-oriented programming, PHP, php 5, php class definition, php experiment, php tutorial, php5, Polymorphism in object-oriented programming, Software design patterns, Software engineering, tutorial, Virtual function | 5 Comments

Thing to Know About PHP Arrays

Posted on October 19, 2011 by Stoimen

Consider the following case. We have an array with identical keys. $arr = array(1 => 10, 1 => 11); What happens when the interpreter reaches this line of code? This is not a syntax error and it is completely valid. … Continue reading →

Posted in micro tutorial, PHP | Tagged Arrays, C programming language, Comparison of programming languages, Computer programming, Computing, Data structures, Data types, Foreach, how-to, interpreter, micro tutorial, PHP, PHP arrays, PHP micro tutorial, php tutorial, programming, tutorial, web development, webdev | Leave a comment