The GNU Objective C runtime can be implemented in C. [object method: args...] compiles to (more or less) IMP tmp = objc_msg_lookup(object, @selector(meth

The GNU Objective C runtime can be implemented in C. [object method: args...] compiles to (more or less) IMP tmp = objc_msg_lookup(object, @selector(method:)) *tmp(object, @selector(method:), args...)