Abstract Method macro on iOS

gistfile1.m

#define DEFINE_ABSTRACT_METHOD(returnType, name)\
- (returnType)name {\
  @throw [NSException exceptionWithName:NSInternalInconsistencyException\
                                 reason:[NSString stringWithFormat:@"You must override %@ in a subclass", NSStringFromSelector(_cmd)]\
                               userInfo:nil];\
  }


// usage

DEFINE_ABSTRACT_METHOD(<<returnType>>, <<methodNameWithOrWithoutArgs>>);