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Possible Duplicate:
What do the plus and minus signs mean in Objective C next to a method?
Since I have started programming in Objective C, I have been implementing methods like this:
-(void)doSomething
Recently, I saw this in a piece of source code:
+(void)doSomething
What is the difference between the + and the – and what is the +?
The methods beginning with + are class methods; that is, they’re not called on actual objects (instances of a class), but rather on a class itself.