Safe casting in Objective C -


What's the purpose-something like C ++ safe briefs?

I know that those objectives are in C ++, but I am not sure about possible side effects. The objective C ++ can slow down collection time - is there any other reason to use it?

Objective-c ++ is inserted securely, alternatively, we can use runtime reflections : 

  id myOb = [someObject getObject]; NSAssert ([myOb isKindOfClass: [MyClass class]], @ @ MyClass is not like the return value type. "); MyClass * newOb = (MyClass *) myOb;

Reference:

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