From: matt@... (matt neuburg)
Date: 2006-10-18T05:20:17+09:00
Subject: Re: ruby way to say this?

Simon Kr�ger <SimonKroeger@gmx.de> wrote:

> matt neuburg wrote:
> > In Ruby, zero isn't false and there is no equivalent of the ?: operator
> > with the middle term omitted. So e.g. I'd like to say [pseudo-code from
> > some other language]:
> > 
> > oneThing()?:otherThing()
> > 
> > meaning, if oneThing is nonzero, return oneThing, else return
> > otherThing. Now, I don't want to evaluate oneThing twice, so I've ended
> > up with this:
> 
> Well, most of the time just ask ruby to do what you want:
> 
> oneThing.nonzero? || otherThing
> 
> --------------------------------------------------------------------------
> num.nonzero? => num or nil
> 
> Returns num if num is not zero, nil otherwise. 

Thx, I feel better now! m. 

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