From: Mauricio Fernandez <mfp@...>
Date: 2007-01-30T17:20:27+09:00
Subject: Re: Sane #hash implementation?

On Tue, Jan 30, 2007 at 05:10:51PM +0900, Eric Hodel wrote:
> On Jan 29, 2007, at 23:26, Shot (Piotr Szotkowski) wrote:
> >Eric Hodel:
> >>On Jan 29, 2007, at 14:38, Shot (Piotr Szotkowski) wrote:
> >>>I’m stuck when it comes to Block#hash, though; I need these to be  
> >>>true:
> >>>Block.new.hash == Block.new.hash
> >>>Block.new([1,2]).hash == Block.new([1,2]).hash
> >
> >>Try:
> >
> >>class Block
> >>  def hash
> >>    to_a.hash
> >>  end
> >>end
> >
> >Thanks a lot, Eric! This is the ‘d’oh!’ solution I was looking for. 
> >:)
> 
> You may want to define #eql? in terms of #to_a as well...

That would fail for the same reason as your Block#hash.

-- 
Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby