From: "David A. Black" <dblack@...>
Date: 2005-07-26T00:24:00+09:00
Subject: Re: Newby question 'unless'

Hi --

On Tue, 26 Jul 2005, EdUarDo wrote:

> Hi all, I'm overriding to_s method and I want to
> print an attribute if a condition is fulfilled.
>
> def to_s
>  "#{@a}" + "#{@b}" unless @a == 0
> end
>
> That sentence doesn't print anything when @a == 0 but what I want to do
> is to not print @b when @a == 0.

If it doesn't print anything then presumably it's not printing @b.  Or
did you mean that last @a to be @b?  If so, you could do:

   def to_s
     "#{@a unless @a.zero?}#{@b unless @b.zero?}"
   end


David

-- 
David A. Black
dblack@wobblini.net