BOOL to NSString

Solution 1:

Use a ternary operator:

BOOl isKind= [thing isKindOfClass:[NSString class]];

NSLog(@"Is Kind of NSString: %d", isKind);
NSLog(@"Is Kind of NSString: %@", isKind ? @"YES" : @"NO");

Solution 2:

You need a formatting specifier in your format string:

NSLog(@"Is Kind of NSString: %@", ([thing isKindOfClass:[NSString class]]) ? @"YES" : @"NO");

Solution 3:

In the background BOOL acts like an int type so you can use %i to test for a BOOL type’s value in NSLog:

BOOL a = YES;
BOOL b = NO;
NSLog(@"a is %i and b is %i", a, b);

// Output: a is 1 and b is 0

Solution 4:

So, I know that this is really old, but I thought I might as well toss my solution into the ring. I do:

#define NSStringFromBOOL(aBOOL)    ((aBOOL) ? @"YES" : @"NO")
NSLog(@"Is Kind of NSString: %@", NSStringFromBOOL([thing isKindOfClass: [NSString class]]);

I feel that this is more in line with some of Apple's to-string macros (NSStringFromClass, NSStringFromRect, NSStringFromSelector, and so on), and generally pretty simple to use on-the-fly. Just be sure to put that macro somewhere globally accessible, or frequently imported!