From: Brian Buckley <briankbuckley@...>
Date: 2005-10-07T01:55:28+09:00
Subject: Re: facets-0.7.2

> Actually the #permute method was renamed to, surprise,
> #each_permutation. It's a recursive method. So, just change #permute to
> #each_permutation and it ought to work.
>
> A new version will be out early next week (finally!) that also has this
> fix.

Thanks, T.  In my code I added a temporary alias_method line after the
require line and now it works.

require 'facet/array/each_permutation'
#needed until facets-0.7.2 bug is fixed
class Array; alias_method :permute, :each_permutation end
[1,2,3].each_permutation{|x| p x}   #now it works!