Rodrigo Rodrigo - 3 months ago 36
Objective-C Question

Enable and Disable NSLog in DEBUG mode

I want to enable NSLog when I am in debug and disable it otherwise. A very simple thing is:

#ifdef DEBUG
NSLog(@"My log");
#endif


But all this
#ifdef
and
#endif
is borring... :( So I try other thing: (.pch is good place to put it)

#ifdef DEBUG
# define NSLog(text) NSLog(text);
#else
# define NSLog(text)
#endif


This work very fine (isn't recursive). But the problem is that NSLog have infinite arguments.

void NSLog(NSString *format, ...)


How I solve this to work in preprocessor mode?

-- Edit --

This code make your NSLog better:

#ifdef DEBUG
#define NSLog(FORMAT, ...) fprintf(stderr,"%s\n", [[NSString stringWithFormat:FORMAT, ##__VA_ARGS__] UTF8String]);
#else
#define NSLog(...)
#endif

Answer

This should do the trick:

 #ifdef DEBUG
 #   define NSLog(...) NSLog(__VA_ARGS__)
 #else 
 #   define NSLog(...) (void)0
 #endif
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