From: Chris Cummer <chris@...>
Date: 2007-12-01T20:21:22+09:00
Subject: Re: Float Question

On 1-Dec-07, at 2:25 AM, Robert Klemme wrote:

> But it seems, few people know the star operator in printf format  
> strings.  You can do this:
>
> irb(main):021:0> module Precision
> irb(main):022:1> def format(decimals,total=0)
> irb(main):023:2> sprintf "%*.*f", total, decimals, self
> irb(main):024:2> end
> irb(main):025:1> end

You're right, I didn't know that one at all and it seems quite handy.  
Thanks for the tip.