Data.Vector.Fusion.Bundle

Bundles for stream fusion

Types

data Step s a where

Result of taking a single step in a stream

Constructors

Yield :: a -> s -> Step s a

Skip :: s -> Step s a

Done :: Step s a

Instances

Functor (Step s)

data Chunk v a

Constructors

Chunk Int (forall m. (PrimMonad m, Vector v a) => Mutable v (PrimState m) a -> m ())

type Bundle = Bundle Id

The type of pure streams

type MBundle = Bundle

Alternative name for monadic streams

In-place markers

inplace :: (forall m. Monad m => Stream m a -> Stream m b) -> (Size -> Size) -> Bundle v a -> Bundle v b

Size hints

size :: Bundle v a -> Size

Size hint of a Bundle

sized :: Bundle v a -> Size -> Bundle v a

Attach a Size hint to a Bundle

Length information

length :: Bundle v a -> Int

Length of a Bundle

null :: Bundle v a -> Bool

Check if a Bundle is empty

Construction

empty :: Bundle v a

Empty Bundle

singleton :: a -> Bundle v a

Singleton Bundle

cons :: a -> Bundle v a -> Bundle v a

Prepend an element

snoc :: Bundle v a -> a -> Bundle v a

Append an element

replicate :: Int -> a -> Bundle v a

Replicate a value to a given length

generate :: Int -> (Int -> a) -> Bundle v a

Generate a stream from its indices

(++) :: Bundle v a -> Bundle v a -> Bundle v a

Concatenate two Bundles

Accessing individual elements

head :: Bundle v a -> a

First element of the Bundle or error if empty

last :: Bundle v a -> a

Last element of the Bundle or error if empty

(!!) :: Bundle v a -> Int -> a

Element at the given position

(!?) :: Bundle v a -> Int -> Maybe a

Element at the given position or Nothing if out of bounds

Substreams

slice

Arguments

:: Int

starting index

-> Int

length

-> Bundle v a

-> Bundle v a

Extract a substream of the given length starting at the given position.

init :: Bundle v a -> Bundle v a

All but the last element

tail :: Bundle v a -> Bundle v a

All but the first element

take :: Int -> Bundle v a -> Bundle v a

The first n elements

drop :: Int -> Bundle v a -> Bundle v a

All but the first n elements

Mapping

map :: (a -> b) -> Bundle v a -> Bundle v b

Map a function over a Bundle

concatMap :: (a -> Bundle v b) -> Bundle v a -> Bundle v b

flatten :: (a -> s) -> (s -> Step s b) -> Size -> Bundle v a -> Bundle v b

Create a Bundle of values from a Bundle of streamable things

unbox :: Bundle v (Box a) -> Bundle v a

Zipping

indexed :: Bundle v a -> Bundle v (Int, a)

Pair each element in a Bundle with its index

indexedR :: Int -> Bundle v a -> Bundle v (Int, a)

Pair each element in a Bundle with its index, starting from the right and counting down

zipWith :: (a -> b -> c) -> Bundle v a -> Bundle v b -> Bundle v c

Zip two Bundles with the given function

zipWith3 :: (a -> b -> c -> d) -> Bundle v a -> Bundle v b -> Bundle v c -> Bundle v d

Zip three Bundles with the given function

zipWith4 :: (a -> b -> c -> d -> e) -> Bundle v a -> Bundle v b -> Bundle v c -> Bundle v d -> Bundle v e

zipWith5 :: (a -> b -> c -> d -> e -> f) -> Bundle v a -> Bundle v b -> Bundle v c -> Bundle v d -> Bundle v e -> Bundle v f

zipWith6 :: (a -> b -> c -> d -> e -> f -> g) -> Bundle v a -> Bundle v b -> Bundle v c -> Bundle v d -> Bundle v e -> Bundle v f -> Bundle v g

zip :: Bundle v a -> Bundle v b -> Bundle v (a, b)

zip3 :: Bundle v a -> Bundle v b -> Bundle v c -> Bundle v (a, b, c)

zip4 :: Bundle v a -> Bundle v b -> Bundle v c -> Bundle v d -> Bundle v (a, b, c, d)

zip5 :: Bundle v a -> Bundle v b -> Bundle v c -> Bundle v d -> Bundle v e -> Bundle v (a, b, c, d, e)

zip6 :: Bundle v a -> Bundle v b -> Bundle v c -> Bundle v d -> Bundle v e -> Bundle v f -> Bundle v (a, b, c, d, e, f)

Filtering

filter :: (a -> Bool) -> Bundle v a -> Bundle v a

Drop elements which do not satisfy the predicate

takeWhile :: (a -> Bool) -> Bundle v a -> Bundle v a

Longest prefix of elements that satisfy the predicate

dropWhile :: (a -> Bool) -> Bundle v a -> Bundle v a

Drop the longest prefix of elements that satisfy the predicate

Searching

elem :: Eq a => a -> Bundle v a -> Bool

Check whether the Bundle contains an element

notElem :: Eq a => a -> Bundle v a -> Bool

Inverse of elem

find :: (a -> Bool) -> Bundle v a -> Maybe a

Yield Just the first element matching the predicate or Nothing if no such element exists.

findIndex :: (a -> Bool) -> Bundle v a -> Maybe Int

Yield Just the index of the first element matching the predicate or Nothing if no such element exists.

Folding

foldl :: (a -> b -> a) -> a -> Bundle v b -> a

Left fold

foldl1 :: (a -> a -> a) -> Bundle v a -> a

Left fold on non-empty Bundles

foldl' :: (a -> b -> a) -> a -> Bundle v b -> a

Left fold with strict accumulator

foldl1' :: (a -> a -> a) -> Bundle v a -> a

Left fold on non-empty Bundles with strict accumulator

foldr :: (a -> b -> b) -> b -> Bundle v a -> b

Right fold

foldr1 :: (a -> a -> a) -> Bundle v a -> a

Right fold on non-empty Bundles

Specialised folds

and :: Bundle v Bool -> Bool

or :: Bundle v Bool -> Bool

Unfolding

unfoldr :: (s -> Maybe (a, s)) -> s -> Bundle v a

Unfold

unfoldrN :: Int -> (s -> Maybe (a, s)) -> s -> Bundle v a

Unfold at most n elements

iterateN :: Int -> (a -> a) -> a -> Bundle v a

Apply function n-1 times to value. Zeroth element is original value.

Scans

prescanl :: (a -> b -> a) -> a -> Bundle v b -> Bundle v a

Prefix scan

prescanl' :: (a -> b -> a) -> a -> Bundle v b -> Bundle v a

Prefix scan with strict accumulator

postscanl :: (a -> b -> a) -> a -> Bundle v b -> Bundle v a

Suffix scan

postscanl' :: (a -> b -> a) -> a -> Bundle v b -> Bundle v a

Suffix scan with strict accumulator

scanl :: (a -> b -> a) -> a -> Bundle v b -> Bundle v a

Haskell-style scan

scanl' :: (a -> b -> a) -> a -> Bundle v b -> Bundle v a

Haskell-style scan with strict accumulator

scanl1 :: (a -> a -> a) -> Bundle v a -> Bundle v a

Scan over a non-empty Bundle

scanl1' :: (a -> a -> a) -> Bundle v a -> Bundle v a

Scan over a non-empty Bundle with a strict accumulator

Enumerations

enumFromStepN :: Num a => a -> a -> Int -> Bundle v a

Yield a Bundle of the given length containing the values x, x+y, x+y+y etc.

enumFromTo :: Enum a => a -> a -> Bundle v a

Enumerate values

WARNING: This operations can be very inefficient. If at all possible, use enumFromStepN instead.

enumFromThenTo :: Enum a => a -> a -> a -> Bundle v a

Enumerate values with a given step.

WARNING: This operations is very inefficient. If at all possible, use enumFromStepN instead.

Conversions

toList :: Bundle v a -> [a]

Convert a Bundle to a list

fromList :: [a] -> Bundle v a

Create a Bundle from a list

fromListN :: Int -> [a] -> Bundle v a

Create a Bundle from the first n elements of a list

 fromListN n xs = fromList (take n xs)

unsafeFromList :: Size -> [a] -> Bundle v a

lift :: Monad m => Bundle v a -> Bundle m v a

Convert a pure stream to a monadic stream

fromVector :: Vector v a => v a -> Bundle v a

reVector :: Bundle u a -> Bundle v a

fromVectors :: Vector v a => [v a] -> Bundle v a

concatVectors :: Vector v a => Bundle u (v a) -> Bundle v a

Monadic combinators

mapM :: Monad m => (a -> m b) -> Bundle v a -> Bundle m v b

Apply a monadic action to each element of the stream, producing a monadic stream of results

mapM_ :: Monad m => (a -> m b) -> Bundle v a -> m ()

Apply a monadic action to each element of the stream

zipWithM :: Monad m => (a -> b -> m c) -> Bundle v a -> Bundle v b -> Bundle m v c

zipWithM_ :: Monad m => (a -> b -> m c) -> Bundle v a -> Bundle v b -> m ()

filterM :: Monad m => (a -> m Bool) -> Bundle v a -> Bundle m v a

Yield a monadic stream of elements that satisfy the monadic predicate

foldM :: Monad m => (a -> b -> m a) -> a -> Bundle v b -> m a

Monadic fold

fold1M :: Monad m => (a -> a -> m a) -> Bundle v a -> m a

Monadic fold over non-empty stream

foldM' :: Monad m => (a -> b -> m a) -> a -> Bundle v b -> m a

Monadic fold with strict accumulator

fold1M' :: Monad m => (a -> a -> m a) -> Bundle v a -> m a

Monad fold over non-empty stream with strict accumulator

eq :: Eq a => Bundle v a -> Bundle v a -> Bool

Check if two Bundles are equal

cmp :: Ord a => Bundle v a -> Bundle v a -> Ordering

Lexicographically compare two Bundles