From: Devin Mullins <twifkak@...>
Date: 2006-11-27T23:21:52+09:00
Subject: Re: ruby and list comprehension

piggybox wrote:
> in Haskell:
> permutation [] = [[]]
> permutation xs = [x:ys | x <- xs, ys <- permutation (delete x xs)]
> 
> in Erlang:
> permutation([]) -> [[]];
> permutation(L)  -> [[H|T] || H <- L, T <- permutation(L--[H])].
> 
> really neat, isn't it?
Yes. :)