Safe Haskell	Safe
Language	Haskell2010

Data.Monoid.Instances.Measured

Description

This module defines the monoid transformer data type Measured.

Synopsis

data Measured a
measure :: FactorialMonoid a => a -> Measured a
extract :: Measured a -> a

Documentation

data Measured a Source #

Measured a is a wrapper around the FactorialMonoid a that memoizes the monoid's length so it becomes a constant-time operation. The parameter is restricted to the StableFactorialMonoid class, which guarantees that length (a <> b) == length a + length b.

Instances

Eq a => Eq (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods (==) :: Measured a -> Measured a -> Bool # (/=) :: Measured a -> Measured a -> Bool #
Ord a => Ord (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods compare :: Measured a -> Measured a -> Ordering # (<) :: Measured a -> Measured a -> Bool # (<=) :: Measured a -> Measured a -> Bool # (>) :: Measured a -> Measured a -> Bool # (>=) :: Measured a -> Measured a -> Bool # max :: Measured a -> Measured a -> Measured a # min :: Measured a -> Measured a -> Measured a #
Show a => Show (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods showsPrec :: Int -> Measured a -> ShowS # show :: Measured a -> String # showList :: [Measured a] -> ShowS #
(FactorialMonoid a, IsString a) => IsString (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods fromString :: String -> Measured a #
StableFactorialMonoid a => Semigroup (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods (<>) :: Measured a -> Measured a -> Measured a # sconcat :: NonEmpty (Measured a) -> Measured a # stimes :: Integral b => b -> Measured a -> Measured a #
StableFactorialMonoid a => Monoid (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods mempty :: Measured a # mappend :: Measured a -> Measured a -> Measured a # mconcat :: [Measured a] -> Measured a #
(RightGCDMonoid a, StableFactorialMonoid a) => RightGCDMonoid (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods commonSuffix :: Measured a -> Measured a -> Measured a Source # stripCommonSuffix :: Measured a -> Measured a -> (Measured a, Measured a, Measured a) Source #
(LeftGCDMonoid a, StableFactorialMonoid a) => LeftGCDMonoid (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods commonPrefix :: Measured a -> Measured a -> Measured a Source # stripCommonPrefix :: Measured a -> Measured a -> (Measured a, Measured a, Measured a) Source #
(RightReductiveMonoid a, StableFactorialMonoid a) => RightReductiveMonoid (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods isSuffixOf :: Measured a -> Measured a -> Bool Source # stripSuffix :: Measured a -> Measured a -> Maybe (Measured a) Source #
(LeftReductiveMonoid a, StableFactorialMonoid a) => LeftReductiveMonoid (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods isPrefixOf :: Measured a -> Measured a -> Bool Source # stripPrefix :: Measured a -> Measured a -> Maybe (Measured a) Source #
StableFactorialMonoid a => PositiveMonoid (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured
StableFactorialMonoid a => MonoidNull (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods null :: Measured a -> Bool Source #
StableFactorialMonoid a => StableFactorialMonoid (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured
StableFactorialMonoid a => FactorialMonoid (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods factors :: Measured a -> [Measured a] Source # primePrefix :: Measured a -> Measured a Source # primeSuffix :: Measured a -> Measured a Source # splitPrimePrefix :: Measured a -> Maybe (Measured a, Measured a) Source # splitPrimeSuffix :: Measured a -> Maybe (Measured a, Measured a) Source # inits :: Measured a -> [Measured a] Source # tails :: Measured a -> [Measured a] Source # foldl :: (a0 -> Measured a -> a0) -> a0 -> Measured a -> a0 Source # foldl' :: (a0 -> Measured a -> a0) -> a0 -> Measured a -> a0 Source # foldr :: (Measured a -> a0 -> a0) -> a0 -> Measured a -> a0 Source # length :: Measured a -> Int Source # foldMap :: Monoid n => (Measured a -> n) -> Measured a -> n Source # span :: (Measured a -> Bool) -> Measured a -> (Measured a, Measured a) Source # break :: (Measured a -> Bool) -> Measured a -> (Measured a, Measured a) Source # split :: (Measured a -> Bool) -> Measured a -> [Measured a] Source # takeWhile :: (Measured a -> Bool) -> Measured a -> Measured a Source # dropWhile :: (Measured a -> Bool) -> Measured a -> Measured a Source # spanMaybe :: s -> (s -> Measured a -> Maybe s) -> Measured a -> (Measured a, Measured a, s) Source # spanMaybe' :: s -> (s -> Measured a -> Maybe s) -> Measured a -> (Measured a, Measured a, s) Source # splitAt :: Int -> Measured a -> (Measured a, Measured a) Source # drop :: Int -> Measured a -> Measured a Source # take :: Int -> Measured a -> Measured a Source # reverse :: Measured a -> Measured a Source #
(Eq a, TextualMonoid a, StableFactorialMonoid a) => TextualMonoid (Measured a) Source #
Instance details Defined in Data.Monoid.Instances.Measured Methods fromText :: Text -> Measured a Source # singleton :: Char -> Measured a Source # splitCharacterPrefix :: Measured a -> Maybe (Char, Measured a) Source # characterPrefix :: Measured a -> Maybe Char Source # map :: (Char -> Char) -> Measured a -> Measured a Source # concatMap :: (Char -> Measured a) -> Measured a -> Measured a Source # toString :: (Measured a -> String) -> Measured a -> String Source # any :: (Char -> Bool) -> Measured a -> Bool Source # all :: (Char -> Bool) -> Measured a -> Bool Source # foldl :: (a0 -> Measured a -> a0) -> (a0 -> Char -> a0) -> a0 -> Measured a -> a0 Source # foldl' :: (a0 -> Measured a -> a0) -> (a0 -> Char -> a0) -> a0 -> Measured a -> a0 Source # foldr :: (Measured a -> a0 -> a0) -> (Char -> a0 -> a0) -> a0 -> Measured a -> a0 Source # scanl :: (Char -> Char -> Char) -> Char -> Measured a -> Measured a Source # scanl1 :: (Char -> Char -> Char) -> Measured a -> Measured a Source # scanr :: (Char -> Char -> Char) -> Char -> Measured a -> Measured a Source # scanr1 :: (Char -> Char -> Char) -> Measured a -> Measured a Source # mapAccumL :: (a0 -> Char -> (a0, Char)) -> a0 -> Measured a -> (a0, Measured a) Source # mapAccumR :: (a0 -> Char -> (a0, Char)) -> a0 -> Measured a -> (a0, Measured a) Source # takeWhile :: (Measured a -> Bool) -> (Char -> Bool) -> Measured a -> Measured a Source # dropWhile :: (Measured a -> Bool) -> (Char -> Bool) -> Measured a -> Measured a Source # break :: (Measured a -> Bool) -> (Char -> Bool) -> Measured a -> (Measured a, Measured a) Source # span :: (Measured a -> Bool) -> (Char -> Bool) -> Measured a -> (Measured a, Measured a) Source # spanMaybe :: s -> (s -> Measured a -> Maybe s) -> (s -> Char -> Maybe s) -> Measured a -> (Measured a, Measured a, s) Source # spanMaybe' :: s -> (s -> Measured a -> Maybe s) -> (s -> Char -> Maybe s) -> Measured a -> (Measured a, Measured a, s) Source # split :: (Char -> Bool) -> Measured a -> [Measured a] Source # find :: (Char -> Bool) -> Measured a -> Maybe Char Source # elem :: Char -> Measured a -> Bool Source # foldl_ :: (a0 -> Char -> a0) -> a0 -> Measured a -> a0 Source # foldl_' :: (a0 -> Char -> a0) -> a0 -> Measured a -> a0 Source # foldr_ :: (Char -> a0 -> a0) -> a0 -> Measured a -> a0 Source # takeWhile_ :: Bool -> (Char -> Bool) -> Measured a -> Measured a Source # dropWhile_ :: Bool -> (Char -> Bool) -> Measured a -> Measured a Source # break_ :: Bool -> (Char -> Bool) -> Measured a -> (Measured a, Measured a) Source # span_ :: Bool -> (Char -> Bool) -> Measured a -> (Measured a, Measured a) Source # spanMaybe_ :: s -> (s -> Char -> Maybe s) -> Measured a -> (Measured a, Measured a, s) Source # spanMaybe_' :: s -> (s -> Char -> Maybe s) -> Measured a -> (Measured a, Measured a, s) Source #

measure :: FactorialMonoid a => a -> Measured a Source #

Create a new Measured value.

extract :: Measured a -> a Source #