Hi i am new to iphone developement, can any one explain me why setDelegate is used, where we should use it.
[request setDelegate:sender];
thanks in advance.
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Delegates are simply a design pattern; there is no special syntax or language support.
A delegate is just an object that another object sends messages to when certain things happen, so that the delegate can handle application-specific details the original object wasn’t designed for. It’s a way of customizing behavior without subclassing.