From: Eric Hodel <drbrain@...7.net>
Date: 2006-12-11T04:52:33+09:00
Subject: Re: defining key equivalence in a hash

On Dec 10, 2006, at 11:33 , Suraj Kurapati wrote:

> Hello,
>
> I'm trying to make two keys equivalent by having their #hash method
> produce the same result. But this does not seem to work:
>
> irb(main):001:0> class K; def hash; 90; end; end
> => nil
> irb(main):002:0> h = {}
> => {}
> irb(main):003:0> h[K.new] = 1
> => 1
> irb(main):004:0> h.key? K.new      # <---- I want this to return true!
> => false
>
> What am I missing?

class K; def eql?(other) true; end; end

#eql? is called if o1.hash == o2.hash.  If #eql? returns true the  
objects belong to the same index.

-- 
Eric Hodel - drbrain@segment7.net - http://blog.segment7.net

I LIT YOUR GEM ON FIRE!