From: Robert Klemme <shortcutter@...>
Date: 2007-12-01T19:25:01+09:00
Subject: Re: Float Question

On 01.12.2007 09:26, Armando Padilla wrote:
> Hey Chris thanks for the feedback.  Yea im using that but i was looking 
> for something built into the Float stack.

Class != stack.

> Something along the lines of 
> Float.new(<number of values after decimal here>).  Basically something 
> without the need to use sprintf.

I fail to see where the issue with using (s)printf is.  Anyway, if you 
do not like the syntax of sprintf you can as well do this:

irb(main):001:0> f=1.0/3
=> 0.333333333333333
irb(main):002:0> "%.2f" % f
=> "0.33"

> Next release of Ruby request?  lol

Probably not.  As others have demonstrated, you can easily do this in 
Ruby today.  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
=> nil
irb(main):026:0> f=1.0/3
=> 0.333333333333333
irb(main):027:0> f.format 3
=> "0.333"
irb(main):028:0> f.format 3,10
=> "     0.333"

Kind regards

	robert