map is:exact -package:vector -package:case-insensitive -package:charset -package:basement -package:foldl -package:conduit -package:invertible -package:monoidal-containers -package:bytestring package:base

map :: (a -> b) -> [a] -> [b]
base Prelude Data.List GHC.Base GHC.List GHC.OldList
map f xs is the list obtained by applying f to each element of xs, i.e., 
map f [x1, x2, ..., xn] == [f x1, f x2, ..., f xn]
map f [x1, x2, ...] == [f x1, f x2, ...]

>>> map (+1) [1, 2, 3]
[2,3,4]
map :: (a -> b) -> NonEmpty a -> NonEmpty b
base Data.List.NonEmpty
Map a function over a NonEmpty stream.