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New to ios. Let me correct if my understanding is wrong?.
typedef void (^someString) (datatype variable_name, datatype variable_name).
I am basically from C background.
It is something like a typedef to function pointer ?..
Not exactly a function pointer, but a block. A block is an Apple extension to the C language: basically it implements lambda functions. It typedefs the
someStringtype to a block returning nothing (void) and taking two arguments.Read more here:
http://en.wikipedia.org/wiki/Blocks_(C_language_extension)
and here:
http://developer.apple.com/library/ios/#documentation/Cocoa/Conceptual/Blocks/Articles/bxUsing.html