BOOL vs bool in iOS

Question

Boy do I feel stupid. Here is a programming 101 question that I just can't figure out.

BOOL MOMisCompatible = [self.objectModel isConfiguration:nil compatibleWithStoreMetadata:existingPersistentStoreMetadata];

    NSLog(@"%d", (unsigned)MOMisCompatible); // A

    if(MOMisCompatible){
        NSLog(@"The MOM is compatible."); // B
    }
    else{
        NSLog(@"ARGH! The MOM is incompatible."); // C
    }

The NSLog outputs 1 or 0 at A as expected. But neither B nor C outputs anything. I debug by putting a breakpoint at A, but the code never drops into A nor B. What am I missing?

Hmmm; that doesn't make sense. Are you sure that's the actual code? — trojanfoe, Apr 15 '16 at 18:56
I had it once that a break point didn't get hit even though the log was printed. Check if you have included a `.m`-File somewhere instead of the `.h`-File. — dasdom, Apr 15 '16 at 18:57
[This](http://stackoverflow.com/questions/541289/objective-c-bool-vs-bool) answer explains the above in best possible way. — Sam92, Apr 15 '16 at 19:45

score 1 · Answer 1 · answered Apr 15 '16 at 19:24

1

Maybe there is something related to their typedef, "BOOL" is a signed char and its header is objc.h, "bool" on the other hand is an int with header stdbool.h. Thus when you try to cast it to (unsigned) it actually works

answered Apr 15 '16 at 19:24

BOOL vs bool in iOS

1 Answers1