From: Tobias Reif <tobiasreif@...>
Date: 2002-02-07T19:15:34+09:00
Subject: Re: shuffle (all possible sequences)

I wrote: (I'll shut up for today :) )


> I'm sorry; it would be way better to have a boolean method, like:
> "abc".consists_of?("abc") # -> true
> "acb".consists_of?("abc") # -> true
> "bac".consists_of?("abc") # -> true
> "bca".consists_of?("abc") # -> true
> 
> And then, how can I say
> 
> word_list = ['foo', 'bca']
> word_list.include? word_consisting_of('abc')
> # => true


This seems to do the trick:

class String
   def consists_of word
     self =~ /[#{word}]{#{word.length}}/
   end
end

class Array
   def get_words_consisting_of word
     select do |item|
       item.consists_of word
     end
   end
end

Tobi



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