On May 21, 2009, at 12:33 PM, Sean McBride wrote:
NSLog(@"Is Member of NSURL: %@", [[step class] isMemberOfClass:
[NSURL class]]);
The %@ placeholder is for arguments that are objects.
isMemberOfClass: and isKindOfClass: return a BOOL, which is not an
object.
Jeff,
And if you're wondering if the compiler could warn you that %@ and
BOOL
do not match, the answer is unfortunately no. -Wformat=2 can give
such
warnings when using sprintf() and friends, but not NSString methods.
One of my pet peeves. :)
Interestingly enough, if you pop over to:
http://www.opensource.apple.com/source/gcc_42/gcc_42-5531/gcc/c-format.c
You will find that Apple has indeed dropped in -Wformat checks for
"nsstring_format_type" and "cfstring_format_type". But if you scroll
down a ways further, you'll find that OOPS!, Apple hasn't actually
implemented those types, at least not completely. One wonders why. Bug
filing time, anyone?
-- Gwynne, Daughter of the Code
"This whole world is an asylum for the incurable."
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