From: Peter Bailey <pbailey@...>
Date: 2007-03-02T02:00:09+09:00
Subject: Re: printf inside a string

Brian Candler wrote:
> On Fri, Mar 02, 2007 at 12:39:13AM +0900, Peter Bailey wrote:
>> This is a pretty simple question. I need to do a "printf" of some
>> numbers inside a string. I just can't figure out how to express a long
>> string that has that "printf" inside it, because the printf statement
>> itself has quotes, too.
> 
> I think what you were trying to do is:
> 
>   number = "3"
>   puts "stuff, #{sprintf "%.3d", number}"
> 
> Note that sprintf(..) is like printf(..) but returns the result as a 
> string
> value, rather than sending it to stdout. Then #{} lets you insert an
> arbitary expression inside another string.
> 
> But as pointed out by others, you can do this in one go as
> 
>   printf "stuff, %.3d\n", number
> 
> HTH,
> 
> Brian.

Thanks to all you guys. I'll probably use sprintf, actually, now that 
I'm clear about how it's used.

Cheers.


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