NSLog the method name with objective-C in iPhone

Question

Currently, we are defining ourselves an extended log mechanism to print out the class name and the source line number of the log.

#define NCLog(s, ...) NSLog(@"<%@:%d> %@", [[NSString stringWithUTF8String:__FILE__] lastPathComponent], \
    __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__])

For example, when I call NCLog(@"Hello world"); The output will be:

<ApplicationDelegate:10>Hello world

Now I also want to log out the method name like:

<ApplicationDelegate:applicationDidFinishLaunching:10>Hello world

So, this would make our debugging become easier when we can know which method is getting called. I know that we also have XCode debugger but sometimes, I also want to do debugging by logging out.

Answer 1

NSLog( @"%s" , _cmd );

_cmd is the SEL in any Objective-C method.

Answer 2

To technically answer your question, you want:

NSLog(@"<%@:%@:%d>", NSStringFromClass([self class]), NSStringFromSelector(_cmd), __LINE__);

Or you could also do:

NSLog(@"%s", __PRETTY_FUNCTION__);