What is the D/B NSLog and NSLogv ?

Question

I follow official Apple's documentation but i don't seem any relevant answer to my question.

NSLog VS NSLogv

Is it same http://stackoverflow.com/questions/40968210/difference-between-nslog-and-nslogv — Amanpreet, Dec 26 '16 at 12:36

score 0 · Answer 1 · answered Dec 07 '16 at 08:11

0

no difference , NSLog called NSLogv with parameter . So if you user NSLog with some parameter , NSLog Re-called NSLogv Function.

answered Dec 07 '16 at 08:11

score 0 · Answer 2 · answered Dec 07 '16 at 08:28

There's a variant of NSLog that accepts a va_list called NSLogv:

- (void) log:(NSString *)text, ... {
  va_list args;
  va_start(args, text);
  NSLogv(text, args);
  va_end(args);
}

The only way to forward the actual ... (not the va_list) is to use a macro. For example:

#define MyLog(f, ...) { \
NSLog(f, ##__VA_ARGS__); \
[someObject doSomething:f, ##__VA_ARGS__]; \
}

2 Answers2