Strict Type Checking in Objective-C via Macros

Question

Occasionally, during development/debugging, I want to ensure that an object is of a certain type:

PageTopBottom *newPage = [notification object];
assert([new         


        

Answer 1

Hmm, with Objective-C++ there are two options:

1. Write a template function

   template void assertType(T* obj) { ... }

2. For a pointer X* x, use NSClassFromString([NSString stringWithUTF8String:typeid(*x).name()]).

Without using C++, you might be able to use GCC extension typeof, but I'm not sure if [typeof(*x) class] is a legit operation...