papa-prelude-lens-0.0.1: Prelude with only useful functions
Papa.Prelude.Lens.Data.List
head :: Cons s s a a => s -> Maybe a Source #
tail :: Cons s s a a => s -> Maybe s Source #
last :: Snoc s s a a => s -> Maybe a Source #
init :: Snoc s s a a => s -> Maybe s Source #
(!!) :: Ixed s => s -> Index s -> Maybe (IxValue s) Source #