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Re: "Tricks" of the "Trade"
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Re: "Tricks" of the "Trade"


  • Subject: Re: "Tricks" of the "Trade"
  • From: Tom Waters <email@hidden>
  • Date: Thu, 7 Jun 2001 08:28:18 -0700

From my uses of NSLog, it seems to support the full complement of printf escapes.

I frequently use x in place of %@ to log the address of objects, and other pointers.

Also, %g seems to give better results for floats/doubles.

%b isn't for booleans, it's for backslash escape expansion, afaik you can only print booleans as 0 or 1 %d or use NSLog(@"%@", b?@"YES":@"NO")

On Thursday, June 7, 2001, at 01:47 AM, Rob Rix wrote:

YES, i do agree with you, NSLog() is a wonderful tool. But, I have a
question, if you want to NSLog() to print the value of an int, is there a
better way than NSLog([[NSNumber numberWithInt:i] stringValue])?

NSLog acts like printf, AFAIK, so you can do something like this:

NSLog(@"The value of the integer is %d", [NSNumber intValue]);

As far as I know, NSLog accepts %d for integers, %f for floats, %c for chars, %s for char* (C strings), and %@ for objects (you can use this to display NSStrings, or with other objects, some hex values whose meaning escapes me).
It might accept others, such as %x, %o (I think those are hex and octal, but I'm not sure), %b (boolean?), et cetera, but I'm not certain.


References: 
 >Re: "Tricks" of the "Trade" (From: Rob Rix <email@hidden>)

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