map -package:Cabal -package:base -package:case-insensitive -package:bytestring -package:blaze-html -package:containers -package:aeson -package:unordered-containers -package:utility-ht -package:ghc -package:vector

O(n) map f t is the Text obtained by applying f to each element of t. Example:
>>> let message = pack "I am not angry. Not at all."

>>> T.map (\c -> if c == '.' then '!' else c) message
"I am not angry! Not at all!"
Performs replacement on invalid scalar values.
O(n) map f xs is the Stream Char obtained by applying f to each element of xs. Properties
unstream . map f . stream = map f
O(n) map f t is the Text obtained by applying f to each element of t. Performs replacement on invalid scalar values.
Apply a transformation to all values in a stream. Subject to fusion
Apply a transformation to all values in a stream. Subject to fusion Since 0.3.0
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]
Generates a map using a Range to determine the length. This may fail to generate anything if the keys produced by the generator do not account for a large enough number of unique items to satify the required map size.
Apply a function to all values flowing downstream
map id = cat

map (g . f) = map f >-> map g
map f xs is the DList obtained by applying f to each element of xs. <math>(length (toList xs)). map obeys the law:
toList (map f xs) = map f (toList xs)
map f xs is the DNonEmpty obtained by applying f to each element of xs. <math>(length (toNonEmpty xs)). map obeys the law:
toNonEmpty (map f xs) = map f (toNonEmpty xs)
Map a function over a NonEmpty stream.
Fold pairs into a map.
Maps a pure function over an InputStream. map f s passes all output from s through the function f. Satisfies the following laws:
Streams.map (g . f) === Streams.map f >=> Streams.map g
Streams.map id === Streams.makeInputStream . Streams.read
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, ...]
this means that map id == id

Examples

>>> map (+1) [1, 2, 3]
[2,3,4]
>>> map id [1, 2, 3]
[1,2,3]
>>> map (\n -> 3 * n + 1) [1, 2, 3]
[4,7,10]
Standard map on the elements of a stream.
>>> S.stdoutLn $ S.map reverse $ each (words "alpha beta")
ahpla
ateb
O(n) map f xs is the ByteString obtained by applying f to each element of xs.
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]
O(n). Map a function over all values in the map.
map (++ "x") (fromList [(5,"a"), (3,"b")]) == fromList [(3, "bx"), (5, "ax")]
O(n*log n). map f s is the set obtained by applying f to each element of s. It's worth noting that the size of the result may be smaller if, for some (x,y), x /= y && f x == f y