Do I need to disable NSLog before release Application?

Question

When releasing an app for iPhone, if I disable `NSLog();` will it perform better?

Accepted Answer

One way to do it is to go into your Build settings and under the Debug configuration add a value to "Preprocessor Macros" value like:

```
DEBUG_MODE=1
```

Make sure you only do this for the Debug configuration and not for Beta or Release versions. Then in a common header file you can do something like:

```
#ifdef DEBUG_MODE
#define DLog( s, ... ) NSLog( @"<%p %@:(%d)> %@", self, [[NSString stringWithUTF8String:__FILE__] lastPathComponent], __LINE__, [NSString stringWithFormat:(s), ##__VA_ARGS__] )
#else
#define DLog( s, ... ) 
#endif
```

Now instead of `NSLog` use `DLog` everywhere. When testing and debugging, you'll get debug messages. When you're ready to release a beta or final release, all those `DLog` lines automatically become empty and nothing gets emitted. This way there's no manual setting of variables or commenting of `NSLogs` required. Picking your build target takes care of it.

Do I need to disable NSLog before release Application?

Solution

Problem

Related problems