是否可以使用NSLog语句提交iPhone应用程序二进制文件？

我一直使用它(发现它在某处)：

// DLog is almost a drop-in replacement for NSLog to turn off logging for release build
// 
// add -DDEBUG to OTHER_CFLAGS in the build user defined settings
//
// Usage:
//
// DLog();
// DLog(@"here");
// DLog(@"value: %d", x);
// Unfortunately this doesn't work DLog(aStringVariable); you have to do this instead DLog(@"%@", aStringVariable);
//

#ifdef DEBUG
#   define DLog(__FORMAT__, ...) NSLog((@"%s [Line %d] " __FORMAT__), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
#else
#   define DLog(...) do {} while (0)
#endif
// ALog always displays output regardless of the DEBUG setting
#define ALog(__FORMAT__, ...) NSLog((@"%s [Line %d] " __FORMAT__), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)

来自Facebook的three20项目有更复杂的调试或记录方式.