From: Martin DeMello <martindemello@...>
Date: 2003-08-08T07:27:08+09:00
Subject: Re: Ducktype, right?

"Mills Thomas (app1tam)" <app1tam@ups.com> wrote:
> I checked out some of the new Ruby features at theluckystiff.net and saw
> 'ducktype'ing.  It sounds uber cool.  Is this what is meant by ducktype?
> (The code may be inelegant; I don't know; I'm still a Ruby Nuby).  Please
> correct me if I got it wrong.
> 
> def ducktype (x, y)
>   !(!( x.map{|f| break false if !y.respond_to?(f) }))
> end

More elegantly in 1.8

x.all? {|f| y.respond_to?(f)}

martin