Objective c isKindOfClass missunderstanding?

Question

I have following structure of objects:

Animal, Dog and Cat. As You expect Dog and Cat are inherited from Animal.

And I\'ve a farm class:

 @im         


        

Answer 1

Your problem lies elsewhere.

I created your Animal, Dog, and Cat classes, and the four cases you have above passed. For reference, here is my code: http://pastie.org/774468

It outputs:

2010-01-11 19:45:10.259 EmptyFoundation[83698:a0f] [cat isMemberOfClass:[Cat class]] PASSED
2010-01-11 19:45:10.265 EmptyFoundation[83698:a0f] [dog isMemberOfClass:[Dog class]] PASSED
2010-01-11 19:45:10.265 EmptyFoundation[83698:a0f] [cat isKindOfClass:[Animal class]] PASSED
2010-01-11 19:45:10.273 EmptyFoundation[83698:a0f] [dog isKindOfClass:[Animal class]] PASSED

EDIT:

I suppose there was a slight possibility that your AnimalFarm object was the source of the error, but I just tried creating the animal objects that way and got the same results (code: http://pastie.org/774480):

2010-01-11 19:51:35.144 EmptyFoundation[83741:a0f] [cat isMemberOfClass:[Cat class]] PASSED
2010-01-11 19:51:35.156 EmptyFoundation[83741:a0f] [dog isMemberOfClass:[Dog class]] PASSED
2010-01-11 19:51:35.157 EmptyFoundation[83741:a0f] ![ant isMemberOfClass:[Cat class]] PASSED
2010-01-11 19:51:35.157 EmptyFoundation[83741:a0f] [cat isKindOfClass:[Animal class]] PASSED
2010-01-11 19:51:35.157 EmptyFoundation[83741:a0f] [dog isKindOfClass:[Animal class]] PASSED
2010-01-11 19:51:35.158 EmptyFoundation[83741:a0f] [ant isKindOfClass:[Animal class]] PASSED

EDIT #2:

Based on your observation that an if...else if statement works but the switch statement does not, I modified the code I posted above to use a switch statement.... and it worked just fine. So my comment/question stands: In your if/switch statements, you're using these constants DOG and CAT. Where are those defined?