From: Farrel Lifson <farrel.lifson@...>
Date: 2006-10-22T06:22:39+09:00
Subject: Re: break from block

On 21/10/06, matt neuburg <matt@tidbits.com> wrote:
> Farrel Lifson <farrel.lifson@gmail.com> wrote:
>
> > I've just run into the following problem. Doing this:
> >  block = lambda{|i| i > 5 ? break : nil}
> >   n.times &block
> > raises a LocalJumpError, I assume because break is not valid from
> > within a Proc object. Is there any way to get around this?
>
> block = lambda{|i| p i; i > 5 ? throw(:done) : nil}
> catch(:done) {42.times &block}
>
> m.
>
> --
> matt neuburg, phd = matt@tidbits.com, http://www.tidbits.com/matt/
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I've tried using throw/catch but it's a serious performance cost.

Farrel