Data.NonEmpty.Mixed

Functions that cope both with plain and non-empty structures.

If there are two versions of a function, where one works on fixed-length lists, then place the fixed-length list variant in NonEmpty and the other one here.

Documentation

groupBy :: Foldable f => (a -> a -> Bool) -> f a -> [T [] a]

groupPairs :: (Foldable f, Eq a) => f (a, b) -> [(a, T [] b)]

groupKey :: (Foldable f, Eq a) => (b -> a) -> f b -> [(a, T [] b)]

groupEithers :: Foldable f => f (Either a b) -> [Either (T [] a) (T [] b)]

segmentAfter :: Foldable f => (a -> Bool) -> f a -> ([T [] a], [a])

segmentBefore :: Foldable f => (a -> Bool) -> f a -> ([a], [T [] a])

filterToInfixes :: Foldable f => (a -> Bool) -> f a -> [T [] a]

mapAdjacent :: (Cons f, Zip f) => (a -> a -> b) -> T f a -> f b

take :: (View g, Repeat f, Traversable f) => g a -> Maybe (f a)

splitAt :: (View g, Repeat f, Traversable f) => g a -> (Maybe (f a), g a)

sliceVertical :: (View g, Repeat f, Traversable f) => g a -> ([f a], g a)

viewR :: (ViewR f, Empty f, Cons f) => T f a -> (f a, a)

This implementation is more efficient for Sequence than viewR.

init :: (ViewR f, Empty f, Cons f) => T f a -> f a

last :: ViewR f => T f a -> a

tails :: (ViewL f, Empty f) => f a -> T [] (f a)

inits :: (ViewL f, Cons f, Empty f) => f a -> T [] (f a)

appendLeft :: Cons f => [a] -> f a -> f a

iterate :: (Repeat f, Traversable f) => (a -> a) -> a -> f a

class Choose f where

Methods

choose :: [a] -> [f a]

Select tuples of list elements: choose "abc" == ['a'!:'b'!:empty,'a'!:'c'!:empty,'b'!:'c'!:empty]

Instances

Choose []

Defined in Data.NonEmpty.Mixed

Methods

choose :: [a] -> [[a]]

Choose T

Defined in Data.NonEmpty.Mixed

Methods

choose :: [a] -> [T a]

Choose f => Choose (T f)

Defined in Data.NonEmpty.Mixed

Methods

choose :: [a] -> [T f a]