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Places where JavaBeans are used?

What is a JavaBean and why do I need it? Since I can create all apps with the class and interface structure? Why do I need beans? And can you give me some examples where beans are essential instead of classes and interfaces? ...
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John Carmack's Unusual Fast Inverse Square Root (Quake III)

John Carmack has a special function in the Quake III source code which calculates the inverse square root of a float, 4x faster than regular (float)(1.0/sqrt(x)) , including a strange 0x5f3759df constant. See the code below. Can someone explain line by line what exactly is going on here and why t...
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What guarantees are there on the run-time complexity (Big-O) of LINQ methods?

I've recently started using LINQ quite a bit, and I haven't really seen any mention of run-time complexity for any of the LINQ methods. Obviously, there are many factors at play here, so let's restrict the discussion to the plain IEnumerable LINQ-to-Objects provider. Further, let's assume that any...
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Difference between Observer, Pub/Sub, and Data Binding

What is the difference between the Observer Pattern , Publish/Subscribe , and Data Binding ? 4 Answers ...
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Bash variable scope

Please explain to me why the very last echo statement is blank? I expect that XCODE is incremented in the while loop to a value of 1: ...
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Referencing a string in a string array resource with xml

I have preferences where you can enable/disable what items will show up on the menu. There are 17 items. I made a string array in values/arrays.xml with titles for each of these 17 items. ...
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How do RVM and rbenv actually work?

I am interested in how RVM and rbenv actually work. 5 Answers 5 ...
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Can I make a function available in every controller in angular?

If I have a utility function foo that I want to be able to call from anywhere inside of my ng-app declaration. Is there someway I can make it globally accessible in my module setup or do I need to add it to the scope in every controller? ...
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How to escape JSON string?

Are there any classes/functions available to be used for easy JSON escaping? I'd rather not have to write my own. 14 Answer...
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what is the difference between a portlet and a servlet?

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