map -package:containers -package:foldl -package:incipit-base -package:base-compat -package:basement -package:charset -package:dlist -package:ghc -package:insert-ordered-containers -package:case-insensitive -package:psqueues -package:monoidal-containers -package:integration -package:base-compat-batteries -package:Cabal-syntax -package:regex-tdfa -package:os-string -package:conduit -package:pipes -is:exact -package:imports -package:hedgehog -package:unordered-containers -package:text -package:singletons-base -package:bloodhound

map :: (a -> b) -> KeyMap a -> KeyMap b
aeson Data.Aeson.KeyMap
Map a function over all values in the map.
map :: (a -> b) -> [a] -> [b]
amazonka-core Amazonka.Prelude, base Prelude Data.List GHC.Base GHC.List GHC.OldList, base-prelude BasePrelude
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.
map :: Html -> Html
blaze-html Text.Blaze.Html4.FrameSet Text.Blaze.Html4.Strict Text.Blaze.Html4.Transitional Text.Blaze.Html5 Text.Blaze.XHtml1.FrameSet Text.Blaze.XHtml1.Strict Text.Blaze.XHtml1.Transitional Text.Blaze.XHtml5
Combinator for the <map> element. Example: 
map $ span $ toHtml "foo"
Result: 
<map><span>foo</span></map>
map :: (Word8 -> Word8) -> ByteString -> ByteString
bytestring Data.ByteString Data.ByteString.Lazy
O(n) map f xs is the ByteString obtained by applying f to each element of xs.
map :: (Char -> Char) -> ByteString -> ByteString
bytestring Data.ByteString.Char8 Data.ByteString.Lazy.Char8
O(n) map f xs is the ByteString obtained by applying f to each element of xs
map :: (Word8 -> Word8) -> ShortByteString -> ShortByteString
bytestring Data.ByteString.Short Data.ByteString.Short.Internal, filepath System.OsPath.Data.ByteString.Short
O(n) map f xs is the ShortByteString obtained by applying f to each element of xs.
map :: (Double -> Double) -> Matrix -> Matrix
dense-linear-algebra Statistics.Matrix
Apply function to every element of matrix
map :: (Word16 -> Word16) -> ShortByteString -> ShortByteString
filepath System.OsPath.Data.ByteString.Short.Word16
O(n) map f xs is the ShortByteString obtained by applying f to each element of xs.
map :: (a <-> b) -> [a] <-> [b]
invertible Data.Invertible.List Data.Invertible.Prelude
Apply a bijection over a list using map.
map :: (a -> b) -> Vector a -> Vector b
vector Data.Vector
O(n) Map a function over a vector.
map :: (a -> b) -> Bundle v a -> Bundle v b
vector Data.Vector.Fusion.Bundle
Map a function over a Bundle
map :: Monad m => (a -> b) -> Bundle m v a -> Bundle m v b
vector Data.Vector.Fusion.Bundle.Monadic
Map a function over a Bundle
map :: (Vector v a, Vector v b) => (a -> b) -> v a -> v b
vector Data.Vector.Generic
O(n) Map a function over a vector.
map :: (Prim a, Prim b) => (a -> b) -> Vector a -> Vector b
vector Data.Vector.Primitive
O(n) Map a function over a vector.
map :: (Storable a, Storable b) => (a -> b) -> Vector a -> Vector b
vector Data.Vector.Storable
O(n) Map a function over a vector.
map :: (Unbox a, Unbox b) => (a -> b) -> Vector a -> Vector b
vector Data.Vector.Unboxed
O(n) Map a function over a vector.
map :: Monad m => (a -> b) -> Stream m a -> Stream m b
vector-stream Data.Stream.Monadic
Map a function over a Stream
newtype Map a b
cql Database.CQL.Protocol Database.CQL.Protocol.Internal
Map :: [(a, b)] -> Map a b
cql Database.CQL.Protocol Database.CQL.Protocol.Internal
data Map
first-class-families Fcf Fcf.Class.Functor Fcf.Classes
Type-level fmap for type-level functors. Note: this name clashes with Map from containers. FMap is provided as a synonym to avoid this.

Example

>>> data Example where Ex :: a -> Example  -- Hide the type of examples to avoid brittleness in different GHC versions

>>> data AddMul :: Nat -> Nat -> Exp Nat

>>> type instance Eval (AddMul x y) = (x TL.+ y) TL.* (x TL.+ y)

>>> :kind! Ex (Eval (Map (AddMul 2) '[0, 1, 2, 3, 4]) :: [Nat])
Ex (Eval (Map (AddMul 2) '[0, 1, 2, 3, 4]) :: [Nat]) :: Example
= Ex [4, 9, 16, 25, 36]
module StmContainers.Map
stm-containers
data Map key value
stm-containers StmContainers.Map
Hash-table, based on STM-specialized Hash Array Mapped Trie.
data Map k v
uniplate Data.Generics.Uniplate.Data.Instances
Invariant preserving version of Map from the containers packages, suitable for use with Uniplate. Use toMap to construct values, and fromMap to deconstruct values.
mapAccumM :: (Monad m, Traversable t) => (a -> b -> m (a, c)) -> a -> t b -> m (a, t c)
Cabal Distribution.Utils.MapAccum
Monadic variant of mapAccumL.