From: Gavin Kistner <gavin@...>
Date: 2004-02-20T22:44:52+09:00
Subject: Re: proposal: let kind_of take more arguments

nobu.nokada@softhome.net wrote:
>     unless [Zero, One].any? {|klass| choice.kind_of?(klass)}
> 
> Or shorter
> 
>     unless [Zero, One].any?(&choice.method(:kind_of?)

Or, as I noted on the RCR:

       unless ([Zero,One] & choice.class.ancestors).length>0

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