map -package:containers -package:Cabal-syntax -is:exact -package:blaze-html -package:case-insensitive -package:monoidal-containers is:exact -package:base package:imports

map :: (a -> b) -> [a] -> [b]
imports Imports
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]