From: "Mauricio Fernández" <batsman.geo@...>
Date: 2004-09-29T05:57:12+09:00
Subject: Re: DRY ruby idiom

On Wed, Sep 29, 2004 at 05:37:21AM +0900, David A. Black wrote:
> Hi --
> 
> On Wed, 29 Sep 2004, stevetuckner wrote:
> 
> > I often use the ||= idiom in ruby for late initialization. But was 
> > recently looking for an idiom that would allow me to overwrite a 
> > variable if the right side is defined without repeating myself.
> > 
> > I have used the following:
> > 
> > var = val if val
> > 
> > but I have to repeat val and that violates DRY. 
> 
>   $ ruby -e 'a = b if b'
                       ===
					    a
>   -e:1: undefined local variable or method `b' for main:Object
>   (NameError)

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