What is use of performSelector in iOS

Question

What is the role of performSelector?

Comparing:

[self btnClicked];

and

[self performSelector:@selector(btn         


        

Answer 1

The two are pretty identical when used as you have demonstrated, but the latter has the advantage that you can dynamically determine which selector to call at runtime.

SEL selector = [self gimmeASelectorToCall];
[self performSelector: selector];

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