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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...
Why was the arguments.callee.caller property deprecated in JavaScript?
Why was the arguments.callee.caller property deprecated in JavaScript?
4 Answers
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What is the difference between JDK dynamic proxy and CGLib?
...e of the Proxy Design Pattern , What is the difference between JDK's Dynamic Proxy and third party dynamic code generation API s such as CGLib ?
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Difference between Observer, Pub/Sub, and Data Binding
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Here's my take on the three:
Data Binding
Essentially, at the core this just means "the value of property X on object Y is semantically bound to the value of property A on object B. No assumptions are made as to how Y knows or is ...
Why does the C# compiler not fault code where a static method calls an instance method?
The following code has a static method, Foo() , calling an instance method, Bar() :
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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
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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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Improving bulk insert performance in Entity framework [duplicate]
I want to insert 20000 records in a table by entity framework and it takes about 2 min. Is there any way other than using SP to improve its performance. This is my code:
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what is the difference between a portlet and a servlet?
I am asked to work on portlets and portals.
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