Indeed. Also, rewriting base library functionality is bad ;): http://www.haskell.org/ghc/docs/7.0.2/html/libraries/base-4.3.1.0/Data-List.html#v:permutations h

Indeed. Also, rewriting base library functionality is bad ;): http://www.haskell.org/ghc/docs/7.0.2/html/libraries/base-4.3.1.0/Data-List.html#v:permutations http://www.haskell.org/ghc/docs/7.0.2/html/libraries/base-4....