Why am I getting an Objective-C error message: Incorrect conversion from 'objc_object *'

Question

This error message was a little puzzled:

invalid conversion from 'objc_object * to' int '

The corresponding line was something like this:

int iResult = [MyUtils utilsMemberFunc:param1,param2];

Answer 1

It doesn't matter what the "to" type is, it’s important that you acknowledge that this message in this context reports that the utilsMemberFunc declaration was not found, and because of the Objective-C dynamic binding, it is assuming that it returns an objc_object * object. not the type that utilsMemberFunc was declared.

So why doesn't he find a declaration? Because "," is used to separate parameters, not ":".