Map a function over all values in the map.

map (++ "x") (fromList [(5,"a"), (3,"b")]) == fromList [(3, "bx"), (5, "ax")]

Map a function over all values in the map.

map (++ "x") (fromList [(5,"a"), (3,"b")]) == fromList [(3, "bx"), (5, "ax")]

Map a function over a Bundle

Map a function over a Bundle

unordered-containers Data.HashMap.Internal Data.HashMap.Internal.Strict Data.HashMap.Lazy Data.HashMap.Strict

Transform this map by applying a function to every value.

Transform this set by applying a function to every value.
The resulting set may be smaller than the source.

>>> HashSet.map show (HashSet.fromList [1,2,3]) HashSet.fromList ["1","2","3"]

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]

Transform the original string-like value but keep it case insensitive.

Apply a function to each element of a Stream, lazily

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]

Apply a function to all values flowing downstream

map id = cat map (g . f) = map f >-> map g