Question

I have been trying to figure out why and how to use performSelector.
I did come across Apple Docs. However, I am not able to fully understand it.

Would anyone be able to help me out in explaining this?

Answer 1

From Apple’s documentation:

the performSelector: method allows you to send messages that aren’t
determined until runtime

Longer story:

You can send messages to objects without prior knowledge of whether the object implements this particular method. For example:

NSString *astring = @"test";

[test dance]; // Doesn't compile
[test performSelector:@selector(dance)]; // Doesn't make sense but compiles