How can I print the name of the object / interface with Xcode breakpoint log?

Question

Xcode debug log can print the method name using %B and the hit count using %H. How can I print the interface / object name using similar notation ? Preferably without the use of NSLog / debugger command.

have you tried NSLog(@"%@", [yourObject class]); ? – Miknash Apr 21 '15 at 12:12 — Miknash, Apr 21 '15 at 12:12

score 1 · Answer 1 · answered Apr 21 '15 at 12:42

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The closest you can get is

NSLog("My file is %@", [NSString stringWithUTF8String:__FILE__]);

__PRETTY_FUNCTION__ contains the class name and method, which may suit you better than FILE.

answered Apr 21 '15 at 12:42

Graham Perks

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I was expecting an answer without using NSLog. – lalthomas Apr 21 '15 at 12:45
OK Well if not NSLog, how do you want it? You could use the same parameters and call printf instead, for example. – Graham Perks Apr 21 '15 at 15:29
Like the one which doesn't need a debugger action but a only a log action. See [my answer](http://stackoverflow.com/a/29774554/2182047). Do you have any similar answer ? – lalthomas Apr 21 '15 at 19:45

score 1 · Accepted Answer · edited May 23 '17 at 10:29

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I just found that @[self class]@ log message will do the trick. I am not sure its validity on every occasion. I am using @[self class]@ %B %H for my purpose. I also found this question and answer but it was not just working on Xcode 6.2.

edited May 23 '17 at 10:29

Community

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answered Apr 21 '15 at 14:04

lalthomas

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Vlad · Answer 3 · 2015-04-21T12:25:45.247

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Every Objective-C object can be printed with %@. NSLog(@"%@", someObject) will print object's description. You can override description method for your classes to provide more detailed info. Look at this note too: Improved logging in Objective-C

edited Apr 21 '15 at 12:25

answered Apr 21 '15 at 12:13

Vlad

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score 0 · Answer 4 · answered Apr 21 '15 at 22:32

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In the breakpoint's debugger command action, you can put:

expr printf ("[%s %s]\n", (char *)object_getClassName(self), _cmd)

This will output, e.g. [SomeClass someMethod:]

answered Apr 21 '15 at 22:32

Graham Perks

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score -1 · Answer 5 · answered Apr 21 '15 at 12:17

You can print anything using NSLog();

Say, for example, you have an

NSString *myString = @"qdfsqsdfqsdf";

This is an important string you would like to log, you'll just type :

NSLog(@"My important string : %@", myString);

If that is what you're asking, I'm surprised you dont' know that if you already know about %B & %H. Am I answering your question or do you need a bit more?

How can I print the name of the object / interface with Xcode breakpoint log?

5 Answers5