:: (a -> IO b) -> DirTree a -> IO (DirTree b) package:LambdaHack

traverse :: (Traversable t, Applicative f) => (a -> f b) -> t a -> f (t b)
LambdaHack Game.LambdaHack.Core.Prelude
Map each element of a structure to an action, evaluate these actions from left to right, and collect the results. For a version that ignores the results see traverse_.
mapM :: (Traversable t, Monad m) => (a -> m b) -> t a -> m (t b)
LambdaHack Game.LambdaHack.Core.Prelude Game.LambdaHack.Core.Prelude
Map each element of a structure to a monadic action, evaluate these actions from left to right, and collect the results. For a version that ignores the results see mapM_.