[Haskell-cafe] Re: A function that makes list of Bool lists from list of Int lists

Alexandru Scvortov writes:

Too many points.

listbool :: [[a]] -> [[Bool]] listbool = zipWith ($) (map (map . const) (cycle [True, False]))

If we choose to zipWith ($), maybe this will do a little less work : listbool = zipWith ($) (cycle $ map (map . const) [True, False]) (ie cycle the 2-element-list of function and not the bool list and then map on an infinite list) -- Guillaume Pinot http://www.irccyn.ec-nantes.fr/~pinot/ « Les grandes personnes ne comprennent jamais rien toutes seules, et c'est fatigant, pour les enfants, de toujours leur donner des explications... » -- Antoine de Saint-Exupéry, Le Petit Prince () ASCII ribbon campaign -- Against HTML e-mail /\ http://www.asciiribbon.org -- Against proprietary attachments