On Apr 19, 2010, at 7:09 AM, Michael Ash wrote: > On Mon, Apr 19, 2010 at 3:27 AM, Jean-Daniel Dupas > <devli...@shadowlab.org> wrote: >> >> Le 19 avr. 2010 à 04:21, Michael Ash a écrit : >>> On Sun, Apr 18, 2010 at 10:15 PM, Dave DeLong <davedel...@me.com> wrote: >>>> Yes, code should obviously be written with this knowledge in mind. The >>>> use case I have for it is for macros. I like to use a debugging macro >>>> like the following to ensure that methods are getting called (without >>>> having to break execution to stop at a breakpoint): >>>> >>>> #define LogMethod NSLog(@"-[%@ %...@]", NSStringFromClass([self class]), >>>> NSStringFromSelector(_cmd)) >>>> >>>> This, of course, is only accurate for instance methods (since I'm logging >>>> a "-"). I was just wondering if there was a way I could use some sort of >>>> introspection to appropriately place a + or a -. >>>> >>>> I like the ([self class] == self) method, simply because it's shorter, but >>>> the [[self class] instancesRespondToSelector:_cmd] is also a great >>>> solution. >>> >>> The magic __func__ identifier produces a C string which I believe, in >>> an ObjC method, has exactly the format you're looking for. >>> >>> Mike >> >> It is fine for most cases, but __func__ is defined at compile time, and so, >> does not log the real type of the instance (if this is a subclass). > > For me, if you're using this in a logging function, this is a feature, > not a bug. If I'm logging a message like "X is Y, should be Z" then I > want to know what code triggered that, and logging the actual object > type is much less useful for that. If you're interested in the actual > type as well, then I'd say just log that too, like: > > NSLog(@"%s:%d %@: %@", __func__, __LINE__, self, yourMessageGoesHere);
Alternatively, if you if you already know what you want to log and just can't decide between '-' and '+', then use __func__[0] for that. -- Greg Parker gpar...@apple.com Runtime Wrangler _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
