Saving Callbacks in a Dictionary (Objective-C for iPhone)

Question

I am trying to store callbacks in a dictionary.

• I cannot use blocks because the iPhone does not support this (unless you use plblocks).
• I tried to use functions, but apparently NSMutableDictionary does not allow these pointers (wants identifier)
• I tried using class methods, but I could not find a way to get a pointer to these
• I could try using functions with the C ++ stl hashmap (if supported in Objective-C ++), but apparently this could slow down compilation time.
• I could try to save both the class and the selector, but that seems pretty messy.

What would be the best way to do this?

Answer 1

, , NSValue. NSValue .

:

[myDict setObject:[NSValue valueWithPointer:functionName] forKey:myKey];

:

NSValue* funcVal=(NSValue*) [myDict objectForKey:myKey];
returnType* (*func)()=[funcVal pointerValue];

Answer 2

NSInvocation.

NSInvocation - Objective-C , , . NSInvocation , NSTimer .

Answer 3

, , ?

Answer 4

++, .mm. , ++.