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Why does Java's hashCode() in String use 31 as a multiplier?

... continual mentions on stackoverflow): The value 31 was chosen because it is an odd prime. If it were even and the multiplication overflowed, information would be lost, as multiplication by 2 is equivalent to shifting. The advantage of using a prime is less clear, but it is traditional. A nice p...
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What exactly is Type Coercion in Javascript?

... How can I put this on a practical situation? Shouldn't I always use === when I want to compare if a value is equal to another? – gespinha Nov 11 '13 at 21:04 ...
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load scripts asynchronously

...esult I have several .js and .css files. I need to create a loader for my site because it takes some time to load. it will be nice if I can display the loader before importing all the: ...
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Mac zip compress without __MACOSX folder?

When I compress files with the built in zip compressor in Mac OSX, it results in an extra folder titled "__MACOSX" created in the extracted zip. ...
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Lightweight Javascript DB for use in Node.js [closed]

Anybody know of a lightweight yet durable database, written in Javascript, that can be used with Node.js. 11 Answers ...
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CSS: Control space between bullet and

I'd like to control how much horizontal space a bullet pushes its <li> to the right in an <ol> or <ul> . ...
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Detect backspace in empty UITextField

...when the Backspace / Delete key is pressed in the iPhone keyboard on a UITextField that is empty? I want to know when Backspace is pressed only if the UITextField is empty. ...
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What is the difference between using IDisposable vs a destructor in C#?

... A finalizer (aka destructor) is part of garbage collection (GC) - it is indeterminate when (or even if) this happens, as GC mainly happens as a result of memory pressure (i.e. need more space). Finalizers are usually only used for cleaning up unmanaged resources, since managed resources wil...
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Understand convertRect:toView:, convertRect:FromView:, convertPoint:toView: and convertPoint:fromVie

I'm trying to understand the functionalities of these methods. Could you provide me a simple usecase to understand theirs semantics? ...
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Limit File Search Scope in Sublime Text 2

... Add and edit this in your ~/Library/Application Support/Sublime Text 2/Packages/User/Preferences.sublime-settings file. // These files will still show up in the side bar, but won't be included in // Goto Anything or Find in Files "bin...