rio-0.1.22.0: A standard library for Haskell

Safe Haskell | Safe-Inferred
Language | Haskell2010

RIO.Vector

Contents

- Immutable vectors
- Accessors
  - Length information
  - Indexing
  - Extracting subvectors
- Construction
  - Initialisation
  - Monadic initialisation
  - Unfolding
  - Enumeration
  - Concatenation
  - Restricting memory usage
- Modifying vectors
  - Permutations
  - Safe destructive update
- Elementwise operations
  - Indexing
  - Mapping
  - Monadic mapping
  - Zipping
  - Monadic zipping
  - Unzipping
- Working with predicates
  - Filtering
  - Partitioning
  - Searching
- Folding
  - Specialised folds
  - Monadic folds
  - Monadic sequencing
- Prefix sums (scans)
- Conversions
  - Lists
  - Different vector types
  - Mutable vectors
- Fusion support
  - Conversion to/from Bundles
  - Recycling support
- Utilities
  - Comparisons
  - Show and Read
  - `Data` and `Typeable`

Description

Generic `Vector` interface. Import as:

    import qualified RIO.Vector as V

This module does not export any partial or unsafe functions. For those, see RIO.Vector.Partial and RIO.Vector.Unsafe

Synopsis

- class MVector (Mutable v) a => Vector (v :: Type -> Type) a
- length :: Vector v a => v a -> Int
- null :: Vector v a => v a -> Bool
- (!?) :: Vector v a => v a -> Int -> Maybe a
- slice :: (HasCallStack, Vector v a) => Int -> Int -> v a -> v a
- take :: Vector v a => Int -> v a -> v a
- drop :: Vector v a => Int -> v a -> v a
- splitAt :: Vector v a => Int -> v a -> (v a, v a)
- empty :: Vector v a => v a
- singleton :: Vector v a => a -> v a
- replicate :: Vector v a => Int -> a -> v a
- generate :: Vector v a => Int -> (Int -> a) -> v a
- iterateN :: Vector v a => Int -> (a -> a) -> a -> v a
- replicateM :: (Monad m, Vector v a) => Int -> m a -> m (v a)
- generateM :: (Monad m, Vector v a) => Int -> (Int -> m a) -> m (v a)
- iterateNM :: (Monad m, Vector v a) => Int -> (a -> m a) -> a -> m (v a)
- create :: Vector v a => (forall s. ST s (Mutable v s a)) -> v a
- createT :: (Traversable f, Vector v a) => (forall s. ST s (f (Mutable v s a))) -> f (v a)
- unfoldr :: Vector v a => (b -> Maybe (a, b)) -> b -> v a
- unfoldrN :: Vector v a => Int -> (b -> Maybe (a, b)) -> b -> v a
- unfoldrM :: (Monad m, Vector v a) => (b -> m (Maybe (a, b))) -> b -> m (v a)
- unfoldrNM :: (Monad m, Vector v a) => Int -> (b -> m (Maybe (a, b))) -> b -> m (v a)
- constructN :: Vector v a => Int -> (v a -> a) -> v a
- constructrN :: Vector v a => Int -> (v a -> a) -> v a
- enumFromN :: (Vector v a, Num a) => a -> Int -> v a
- enumFromStepN :: (Vector v a, Num a) => a -> a -> Int -> v a
- enumFromTo :: (Vector v a, Enum a) => a -> a -> v a
- enumFromThenTo :: (Vector v a, Enum a) => a -> a -> a -> v a
- cons :: Vector v a => a -> v a -> v a
- snoc :: Vector v a => v a -> a -> v a
- (++) :: Vector v a => v a -> v a -> v a
- concat :: Vector v a => [v a] -> v a
- concatNE :: Vector v a => NonEmpty (v a) -> v a
- force :: Vector v a => v a -> v a
- reverse :: Vector v a => v a -> v a
- modify :: Vector v a => (forall s. Mutable v s a -> ST s ()) -> v a -> v a
- indexed :: (Vector v a, Vector v (Int, a)) => v a -> v (Int, a)
- map :: (Vector v a, Vector v b) => (a -> b) -> v a -> v b
- imap :: (Vector v a, Vector v b) => (Int -> a -> b) -> v a -> v b
- concatMap :: (Vector v a, Vector v b) => (a -> v b) -> v a -> v b
- mapM :: (Monad m, Vector v a, Vector v b) => (a -> m b) -> v a -> m (v b)
- imapM :: (Monad m, Vector v a, Vector v b) => (Int -> a -> m b) -> v a -> m (v b)
- mapM_ :: (Monad m, Vector v a) => (a -> m b) -> v a -> m ()
- imapM_ :: (Monad m, Vector v a) => (Int -> a -> m b) -> v a -> m ()
- forM :: (Monad m, Vector v a, Vector v b) => v a -> (a -> m b) -> m (v b)
- forM_ :: (Monad m, Vector v a) => v a -> (a -> m b) -> m ()
- zipWith :: (Vector v a, Vector v b, Vector v c) => (a -> b -> c) -> v a -> v b -> v c
- zipWith3 :: (Vector v a, Vector v b, Vector v c, Vector v d) => (a -> b -> c -> d) -> v a -> v b -> v c -> v d
- zipWith4 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e) => (a -> b -> c -> d -> e) -> v a -> v b -> v c -> v d -> v e
- zipWith5 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f) => (a -> b -> c -> d -> e -> f) -> v a -> v b -> v c -> v d -> v e -> v f
- zipWith6 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f, Vector v g) => (a -> b -> c -> d -> e -> f -> g) -> v a -> v b -> v c -> v d -> v e -> v f -> v g
- izipWith :: (Vector v a, Vector v b, Vector v c) => (Int -> a -> b -> c) -> v a -> v b -> v c
- izipWith3 :: (Vector v a, Vector v b, Vector v c, Vector v d) => (Int -> a -> b -> c -> d) -> v a -> v b -> v c -> v d
- izipWith4 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e) => (Int -> a -> b -> c -> d -> e) -> v a -> v b -> v c -> v d -> v e
- izipWith5 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f) => (Int -> a -> b -> c -> d -> e -> f) -> v a -> v b -> v c -> v d -> v e -> v f
- izipWith6 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f, Vector v g) => (Int -> a -> b -> c -> d -> e -> f -> g) -> v a -> v b -> v c -> v d -> v e -> v f -> v g
- zip :: (Vector v a, Vector v b, Vector v (a, b)) => v a -> v b -> v (a, b)
- zip3 :: (Vector v a, Vector v b, Vector v c, Vector v (a, b, c)) => v a -> v b -> v c -> v (a, b, c)
- zip4 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v (a, b, c, d)) => v a -> v b -> v c -> v d -> v (a, b, c, d)
- zip5 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v (a, b, c, d, e)) => v a -> v b -> v c -> v d -> v e -> v (a, b, c, d, e)
- zip6 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f, Vector v (a, b, c, d, e, f)) => v a -> v b -> v c -> v d -> v e -> v f -> v (a, b, c, d, e, f)
- zipWithM :: (Monad m, Vector v a, Vector v b, Vector v c) => (a -> b -> m c) -> v a -> v b -> m (v c)
- izipWithM :: (Monad m, Vector v a, Vector v b, Vector v c) => (Int -> a -> b -> m c) -> v a -> v b -> m (v c)
- zipWithM_ :: (Monad m, Vector v a, Vector v b) => (a -> b -> m c) -> v a -> v b -> m ()
- izipWithM_ :: (Monad m, Vector v a, Vector v b) => (Int -> a -> b -> m c) -> v a -> v b -> m ()
- unzip :: (Vector v a, Vector v b, Vector v (a, b)) => v (a, b) -> (v a, v b)
- unzip3 :: (Vector v a, Vector v b, Vector v c, Vector v (a, b, c)) => v (a, b, c) -> (v a, v b, v c)
- unzip4 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v (a, b, c, d)) => v (a, b, c, d) -> (v a, v b, v c, v d)
- unzip5 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v (a, b, c, d, e)) => v (a, b, c, d, e) -> (v a, v b, v c, v d, v e)
- unzip6 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f, Vector v (a, b, c, d, e, f)) => v (a, b, c, d, e, f) -> (v a, v b, v c, v d, v e, v f)
- filter :: Vector v a => (a -> Bool) -> v a -> v a
- ifilter :: Vector v a => (Int -> a -> Bool) -> v a -> v a
- uniq :: (Vector v a, Eq a) => v a -> v a
- mapMaybe :: (Vector v a, Vector v b) => (a -> Maybe b) -> v a -> v b
- imapMaybe :: (Vector v a, Vector v b) => (Int -> a -> Maybe b) -> v a -> v b
- filterM :: (Monad m, Vector v a) => (a -> m Bool) -> v a -> m (v a)
- takeWhile :: Vector v a => (a -> Bool) -> v a -> v a
- dropWhile :: Vector v a => (a -> Bool) -> v a -> v a
- partition :: Vector v a => (a -> Bool) -> v a -> (v a, v a)
- unstablePartition :: Vector v a => (a -> Bool) -> v a -> (v a, v a)
- span :: Vector v a => (a -> Bool) -> v a -> (v a, v a)
- break :: Vector v a => (a -> Bool) -> v a -> (v a, v a)
- elem :: (Vector v a, Eq a) => a -> v a -> Bool
- notElem :: (Vector v a, Eq a) => a -> v a -> Bool
- find :: Vector v a => (a -> Bool) -> v a -> Maybe a
- findIndex :: Vector v a => (a -> Bool) -> v a -> Maybe Int
- findIndices :: (Vector v a, Vector v Int) => (a -> Bool) -> v a -> v Int
- elemIndex :: (Vector v a, Eq a) => a -> v a -> Maybe Int
- elemIndices :: (Vector v a, Vector v Int, Eq a) => a -> v a -> v Int
- foldl :: Vector v b => (a -> b -> a) -> a -> v b -> a
- foldl' :: Vector v b => (a -> b -> a) -> a -> v b -> a
- foldr :: Vector v a => (a -> b -> b) -> b -> v a -> b
- foldr' :: Vector v a => (a -> b -> b) -> b -> v a -> b
- ifoldl :: Vector v b => (a -> Int -> b -> a) -> a -> v b -> a
- ifoldl' :: Vector v b => (a -> Int -> b -> a) -> a -> v b -> a
- ifoldr :: Vector v a => (Int -> a -> b -> b) -> b -> v a -> b
- ifoldr' :: Vector v a => (Int -> a -> b -> b) -> b -> v a -> b
- all :: Vector v a => (a -> Bool) -> v a -> Bool
- any :: Vector v a => (a -> Bool) -> v a -> Bool
- and :: Vector v Bool => v Bool -> Bool
- or :: Vector v Bool => v Bool -> Bool
- sum :: (Vector v a, Num a) => v a -> a
- product :: (Vector v a, Num a) => v a -> a
- foldM :: (Monad m, Vector v b) => (a -> b -> m a) -> a -> v b -> m a
- ifoldM :: (Monad m, Vector v b) => (a -> Int -> b -> m a) -> a -> v b -> m a
- foldM' :: (Monad m, Vector v b) => (a -> b -> m a) -> a -> v b -> m a
- ifoldM' :: (Monad m, Vector v b) => (a -> Int -> b -> m a) -> a -> v b -> m a
- foldM_ :: (Monad m, Vector v b) => (a -> b -> m a) -> a -> v b -> m ()
- ifoldM_ :: (Monad m, Vector v b) => (a -> Int -> b -> m a) -> a -> v b -> m ()
- foldM'_ :: (Monad m, Vector v b) => (a -> b -> m a) -> a -> v b -> m ()
- ifoldM'_ :: (Monad m, Vector v b) => (a -> Int -> b -> m a) -> a -> v b -> m ()
- sequence :: (Monad m, Vector v a, Vector v (m a)) => v (m a) -> m (v a)
- sequence_ :: (Monad m, Vector v (m a)) => v (m a) -> m ()
- prescanl :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a
- prescanl' :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a
- postscanl :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a
- postscanl' :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a
- scanl :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a
- scanl' :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a
- iscanl :: (Vector v a, Vector v b) => (Int -> a -> b -> a) -> a -> v b -> v a
- iscanl' :: (Vector v a, Vector v b) => (Int -> a -> b -> a) -> a -> v b -> v a
- prescanr :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b
- prescanr' :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b
- postscanr :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b
- postscanr' :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b
- scanr :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b
- scanr' :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b
- iscanr :: (Vector v a, Vector v b) => (Int -> a -> b -> b) -> b -> v a -> v b
- iscanr' :: (Vector v a, Vector v b) => (Int -> a -> b -> b) -> b -> v a -> v b
- toList :: Vector v a => v a -> [a]
- fromList :: Vector v a => [a] -> v a
- fromListN :: Vector v a => Int -> [a] -> v a
- convert :: (Vector v a, Vector w a) => v a -> w a
- freeze :: (PrimMonad m, Vector v a) => Mutable v (PrimState m) a -> m (v a)
- thaw :: (PrimMonad m, Vector v a) => v a -> m (Mutable v (PrimState m) a)
- copy :: (HasCallStack, PrimMonad m, Vector v a) => Mutable v (PrimState m) a -> v a -> m ()
- stream :: Vector v a => v a -> Bundle v a
- unstream :: Vector v a => Bundle v a -> v a
- streamR :: forall v a (u :: Type -> Type). Vector v a => v a -> Bundle u a
- unstreamR :: Vector v a => Bundle v a -> v a
- new :: Vector v a => New v a -> v a
- clone :: Vector v a => v a -> New v a
- eq :: (Vector v a, Eq a) => v a -> v a -> Bool
- cmp :: (Vector v a, Ord a) => v a -> v a -> Ordering
- eqBy :: (Vector v a, Vector v b) => (a -> b -> Bool) -> v a -> v b -> Bool
- cmpBy :: (Vector v a, Vector v b) => (a -> b -> Ordering) -> v a -> v b -> Ordering
- showsPrec :: (Vector v a, Show a) => Int -> v a -> ShowS
- readPrec :: (Vector v a, Read a) => ReadPrec (v a)
- liftShowsPrec :: Vector v a => (Int -> a -> ShowS) -> ([a] -> ShowS) -> Int -> v a -> ShowS
- liftReadsPrec :: Vector v a => (Int -> ReadS a) -> ReadS [a] -> Int -> ReadS (v a)
- gfoldl :: (Vector v a, Data a) => (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> v a -> c (v a)
- dataCast :: (Vector v a, Data a, Typeable v, Typeable t) => (forall d. Data d => c (t d)) -> Maybe (c (v a))
- mkType :: String -> DataType

# Immutable vectors

class MVector (Mutable v) a => Vector (v :: Type -> Type) a Source #

Class of immutable vectors. Every immutable vector is associated with its mutable version through the `Mutable` type family. Methods of this class should not be used directly. Instead, Data.Vector.Generic and other `Data.Vector` modules provide safe and fusible wrappers.

Minimum complete implementation:

- `basicUnsafeFreeze`
- `basicUnsafeThaw`
- `basicLength`
- `basicUnsafeSlice`
- `basicUnsafeIndexM`

Minimal complete definition

basicUnsafeFreeze, basicUnsafeThaw, basicLength, basicUnsafeSlice, basicUnsafeIndexM

#### Instances

Instances details

Vector Vector a |

Instance details

Defined in Data.Vector

Methods

basicUnsafeFreeze :: Mutable Vector s a -> ST s (Vector a) Source #

basicUnsafeThaw :: Vector a -> ST s (Mutable Vector s a) Source #

basicLength :: Vector a -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector a -> Vector a Source #

basicUnsafeIndexM :: Vector a -> Int -> Box a Source #

basicUnsafeCopy :: Mutable Vector s a -> Vector a -> ST s () Source #

elemseq :: Vector a -> a -> b -> b Source #

Prim a => Vector Vector a |

Instance details

Defined in Data.Vector.Primitive

Methods

basicUnsafeFreeze :: Mutable Vector s a -> ST s (Vector a) Source #

basicUnsafeThaw :: Vector a -> ST s (Mutable Vector s a) Source #

basicLength :: Vector a -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector a -> Vector a Source #

basicUnsafeIndexM :: Vector a -> Int -> Box a Source #

basicUnsafeCopy :: Mutable Vector s a -> Vector a -> ST s () Source #

elemseq :: Vector a -> a -> b -> b Source #

Storable a => Vector Vector a |

Instance details

Defined in Data.Vector.Storable

Methods

basicUnsafeFreeze :: Mutable Vector s a -> ST s (Vector a) Source #

basicUnsafeThaw :: Vector a -> ST s (Mutable Vector s a) Source #

basicLength :: Vector a -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector a -> Vector a Source #

basicUnsafeIndexM :: Vector a -> Int -> Box a Source #

basicUnsafeCopy :: Mutable Vector s a -> Vector a -> ST s () Source #

elemseq :: Vector a -> a -> b -> b Source #

Vector Vector All |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s All -> ST s (Vector All) Source #

basicUnsafeThaw :: Vector All -> ST s (Mutable Vector s All) Source #

basicLength :: Vector All -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector All -> Vector All Source #

basicUnsafeIndexM :: Vector All -> Int -> Box All Source #

basicUnsafeCopy :: Mutable Vector s All -> Vector All -> ST s () Source #

elemseq :: Vector All -> All -> b -> b Source #

Vector Vector Any |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Any -> ST s (Vector Any) Source #

basicUnsafeThaw :: Vector Any -> ST s (Mutable Vector s Any) Source #

basicLength :: Vector Any -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Any -> Vector Any Source #

basicUnsafeIndexM :: Vector Any -> Int -> Box Any Source #

basicUnsafeCopy :: Mutable Vector s Any -> Vector Any -> ST s () Source #

elemseq :: Vector Any -> Any -> b -> b Source #

Vector Vector Int16 |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Int16 -> ST s (Vector Int16) Source #

basicUnsafeThaw :: Vector Int16 -> ST s (Mutable Vector s Int16) Source #

basicLength :: Vector Int16 -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Int16 -> Vector Int16 Source #

basicUnsafeIndexM :: Vector Int16 -> Int -> Box Int16 Source #

basicUnsafeCopy :: Mutable Vector s Int16 -> Vector Int16 -> ST s () Source #

elemseq :: Vector Int16 -> Int16 -> b -> b Source #

Vector Vector Int32 |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Int32 -> ST s (Vector Int32) Source #

basicUnsafeThaw :: Vector Int32 -> ST s (Mutable Vector s Int32) Source #

basicLength :: Vector Int32 -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Int32 -> Vector Int32 Source #

basicUnsafeIndexM :: Vector Int32 -> Int -> Box Int32 Source #

basicUnsafeCopy :: Mutable Vector s Int32 -> Vector Int32 -> ST s () Source #

elemseq :: Vector Int32 -> Int32 -> b -> b Source #

Vector Vector Int64 |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Int64 -> ST s (Vector Int64) Source #

basicUnsafeThaw :: Vector Int64 -> ST s (Mutable Vector s Int64) Source #

basicLength :: Vector Int64 -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Int64 -> Vector Int64 Source #

basicUnsafeIndexM :: Vector Int64 -> Int -> Box Int64 Source #

basicUnsafeCopy :: Mutable Vector s Int64 -> Vector Int64 -> ST s () Source #

elemseq :: Vector Int64 -> Int64 -> b -> b Source #

Vector Vector Int8 |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Int8 -> ST s (Vector Int8) Source #

basicUnsafeThaw :: Vector Int8 -> ST s (Mutable Vector s Int8) Source #

basicLength :: Vector Int8 -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Int8 -> Vector Int8 Source #

basicUnsafeIndexM :: Vector Int8 -> Int -> Box Int8 Source #

basicUnsafeCopy :: Mutable Vector s Int8 -> Vector Int8 -> ST s () Source #

elemseq :: Vector Int8 -> Int8 -> b -> b Source #

Vector Vector Word16 |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Word16 -> ST s (Vector Word16) Source #

basicUnsafeThaw :: Vector Word16 -> ST s (Mutable Vector s Word16) Source #

basicLength :: Vector Word16 -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Word16 -> Vector Word16 Source #

basicUnsafeIndexM :: Vector Word16 -> Int -> Box Word16 Source #

basicUnsafeCopy :: Mutable Vector s Word16 -> Vector Word16 -> ST s () Source #

elemseq :: Vector Word16 -> Word16 -> b -> b Source #

Vector Vector Word32 |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Word32 -> ST s (Vector Word32) Source #

basicUnsafeThaw :: Vector Word32 -> ST s (Mutable Vector s Word32) Source #

basicLength :: Vector Word32 -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Word32 -> Vector Word32 Source #

basicUnsafeIndexM :: Vector Word32 -> Int -> Box Word32 Source #

basicUnsafeCopy :: Mutable Vector s Word32 -> Vector Word32 -> ST s () Source #

elemseq :: Vector Word32 -> Word32 -> b -> b Source #

Vector Vector Word64 |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Word64 -> ST s (Vector Word64) Source #

basicUnsafeThaw :: Vector Word64 -> ST s (Mutable Vector s Word64) Source #

basicLength :: Vector Word64 -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Word64 -> Vector Word64 Source #

basicUnsafeIndexM :: Vector Word64 -> Int -> Box Word64 Source #

basicUnsafeCopy :: Mutable Vector s Word64 -> Vector Word64 -> ST s () Source #

elemseq :: Vector Word64 -> Word64 -> b -> b Source #

Vector Vector Word8 |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Word8 -> ST s (Vector Word8) Source #

basicUnsafeThaw :: Vector Word8 -> ST s (Mutable Vector s Word8) Source #

basicLength :: Vector Word8 -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Word8 -> Vector Word8 Source #

basicUnsafeIndexM :: Vector Word8 -> Int -> Box Word8 Source #

basicUnsafeCopy :: Mutable Vector s Word8 -> Vector Word8 -> ST s () Source #

elemseq :: Vector Word8 -> Word8 -> b -> b Source #

Vector Vector () |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s () -> ST s (Vector ()) Source #

basicUnsafeThaw :: Vector () -> ST s (Mutable Vector s ()) Source #

basicLength :: Vector () -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector () -> Vector () Source #

basicUnsafeIndexM :: Vector () -> Int -> Box () Source #

basicUnsafeCopy :: Mutable Vector s () -> Vector () -> ST s () Source #

elemseq :: Vector () -> () -> b -> b Source #

Vector Vector Bool |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Bool -> ST s (Vector Bool) Source #

basicUnsafeThaw :: Vector Bool -> ST s (Mutable Vector s Bool) Source #

basicLength :: Vector Bool -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Bool -> Vector Bool Source #

basicUnsafeIndexM :: Vector Bool -> Int -> Box Bool Source #

basicUnsafeCopy :: Mutable Vector s Bool -> Vector Bool -> ST s () Source #

elemseq :: Vector Bool -> Bool -> b -> b Source #

Vector Vector Char |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Char -> ST s (Vector Char) Source #

basicUnsafeThaw :: Vector Char -> ST s (Mutable Vector s Char) Source #

basicLength :: Vector Char -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Char -> Vector Char Source #

basicUnsafeIndexM :: Vector Char -> Int -> Box Char Source #

basicUnsafeCopy :: Mutable Vector s Char -> Vector Char -> ST s () Source #

elemseq :: Vector Char -> Char -> b -> b Source #

Vector Vector Double |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Double -> ST s (Vector Double) Source #

basicUnsafeThaw :: Vector Double -> ST s (Mutable Vector s Double) Source #

basicLength :: Vector Double -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Double -> Vector Double Source #

basicUnsafeIndexM :: Vector Double -> Int -> Box Double Source #

basicUnsafeCopy :: Mutable Vector s Double -> Vector Double -> ST s () Source #

elemseq :: Vector Double -> Double -> b -> b Source #

Vector Vector Float |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Float -> ST s (Vector Float) Source #

basicUnsafeThaw :: Vector Float -> ST s (Mutable Vector s Float) Source #

basicLength :: Vector Float -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Float -> Vector Float Source #

basicUnsafeIndexM :: Vector Float -> Int -> Box Float Source #

basicUnsafeCopy :: Mutable Vector s Float -> Vector Float -> ST s () Source #

elemseq :: Vector Float -> Float -> b -> b Source #

Vector Vector Int |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Int -> ST s (Vector Int) Source #

basicUnsafeThaw :: Vector Int -> ST s (Mutable Vector s Int) Source #

basicLength :: Vector Int -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Int -> Vector Int Source #

basicUnsafeIndexM :: Vector Int -> Int -> Box Int Source #

basicUnsafeCopy :: Mutable Vector s Int -> Vector Int -> ST s () Source #

elemseq :: Vector Int -> Int -> b -> b Source #

Vector Vector Word |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s Word -> ST s (Vector Word) Source #

basicUnsafeThaw :: Vector Word -> ST s (Mutable Vector s Word) Source #

basicLength :: Vector Word -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector Word -> Vector Word Source #

basicUnsafeIndexM :: Vector Word -> Int -> Box Word Source #

basicUnsafeCopy :: Mutable Vector s Word -> Vector Word -> ST s () Source #

elemseq :: Vector Word -> Word -> b -> b Source #

Unbox a => Vector Vector (Complex a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Complex a) -> ST s (Vector (Complex a)) Source #

basicUnsafeThaw :: Vector (Complex a) -> ST s (Mutable Vector s (Complex a)) Source #

basicLength :: Vector (Complex a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Complex a) -> Vector (Complex a) Source #

basicUnsafeIndexM :: Vector (Complex a) -> Int -> Box (Complex a) Source #

basicUnsafeCopy :: Mutable Vector s (Complex a) -> Vector (Complex a) -> ST s () Source #

elemseq :: Vector (Complex a) -> Complex a -> b -> b Source #

Unbox a => Vector Vector (Identity a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Identity a) -> ST s (Vector (Identity a)) Source #

basicUnsafeThaw :: Vector (Identity a) -> ST s (Mutable Vector s (Identity a)) Source #

basicLength :: Vector (Identity a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Identity a) -> Vector (Identity a) Source #

basicUnsafeIndexM :: Vector (Identity a) -> Int -> Box (Identity a) Source #

basicUnsafeCopy :: Mutable Vector s (Identity a) -> Vector (Identity a) -> ST s () Source #

elemseq :: Vector (Identity a) -> Identity a -> b -> b Source #

Unbox a => Vector Vector (Down a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Down a) -> ST s (Vector (Down a)) Source #

basicUnsafeThaw :: Vector (Down a) -> ST s (Mutable Vector s (Down a)) Source #

basicLength :: Vector (Down a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Down a) -> Vector (Down a) Source #

basicUnsafeIndexM :: Vector (Down a) -> Int -> Box (Down a) Source #

basicUnsafeCopy :: Mutable Vector s (Down a) -> Vector (Down a) -> ST s () Source #

elemseq :: Vector (Down a) -> Down a -> b -> b Source #

Unbox a => Vector Vector (First a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (First a) -> ST s (Vector (First a)) Source #

basicUnsafeThaw :: Vector (First a) -> ST s (Mutable Vector s (First a)) Source #

basicLength :: Vector (First a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (First a) -> Vector (First a) Source #

basicUnsafeIndexM :: Vector (First a) -> Int -> Box (First a) Source #

basicUnsafeCopy :: Mutable Vector s (First a) -> Vector (First a) -> ST s () Source #

elemseq :: Vector (First a) -> First a -> b -> b Source #

Unbox a => Vector Vector (Last a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Last a) -> ST s (Vector (Last a)) Source #

basicUnsafeThaw :: Vector (Last a) -> ST s (Mutable Vector s (Last a)) Source #

basicLength :: Vector (Last a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Last a) -> Vector (Last a) Source #

basicUnsafeIndexM :: Vector (Last a) -> Int -> Box (Last a) Source #

basicUnsafeCopy :: Mutable Vector s (Last a) -> Vector (Last a) -> ST s () Source #

elemseq :: Vector (Last a) -> Last a -> b -> b Source #

Unbox a => Vector Vector (Max a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Max a) -> ST s (Vector (Max a)) Source #

basicUnsafeThaw :: Vector (Max a) -> ST s (Mutable Vector s (Max a)) Source #

basicLength :: Vector (Max a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Max a) -> Vector (Max a) Source #

basicUnsafeIndexM :: Vector (Max a) -> Int -> Box (Max a) Source #

basicUnsafeCopy :: Mutable Vector s (Max a) -> Vector (Max a) -> ST s () Source #

elemseq :: Vector (Max a) -> Max a -> b -> b Source #

Unbox a => Vector Vector (Min a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Min a) -> ST s (Vector (Min a)) Source #

basicUnsafeThaw :: Vector (Min a) -> ST s (Mutable Vector s (Min a)) Source #

basicLength :: Vector (Min a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Min a) -> Vector (Min a) Source #

basicUnsafeIndexM :: Vector (Min a) -> Int -> Box (Min a) Source #

basicUnsafeCopy :: Mutable Vector s (Min a) -> Vector (Min a) -> ST s () Source #

elemseq :: Vector (Min a) -> Min a -> b -> b Source #

Unbox a => Vector Vector (WrappedMonoid a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (WrappedMonoid a) -> ST s (Vector (WrappedMonoid a)) Source #

basicUnsafeThaw :: Vector (WrappedMonoid a) -> ST s (Mutable Vector s (WrappedMonoid a)) Source #

basicLength :: Vector (WrappedMonoid a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (WrappedMonoid a) -> Vector (WrappedMonoid a) Source #

basicUnsafeIndexM :: Vector (WrappedMonoid a) -> Int -> Box (WrappedMonoid a) Source #

basicUnsafeCopy :: Mutable Vector s (WrappedMonoid a) -> Vector (WrappedMonoid a) -> ST s () Source #

elemseq :: Vector (WrappedMonoid a) -> WrappedMonoid a -> b -> b Source #

Unbox a => Vector Vector (Dual a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Dual a) -> ST s (Vector (Dual a)) Source #

basicUnsafeThaw :: Vector (Dual a) -> ST s (Mutable Vector s (Dual a)) Source #

basicLength :: Vector (Dual a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Dual a) -> Vector (Dual a) Source #

basicUnsafeIndexM :: Vector (Dual a) -> Int -> Box (Dual a) Source #

basicUnsafeCopy :: Mutable Vector s (Dual a) -> Vector (Dual a) -> ST s () Source #

elemseq :: Vector (Dual a) -> Dual a -> b -> b Source #

Unbox a => Vector Vector (Product a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Product a) -> ST s (Vector (Product a)) Source #

basicUnsafeThaw :: Vector (Product a) -> ST s (Mutable Vector s (Product a)) Source #

basicLength :: Vector (Product a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Product a) -> Vector (Product a) Source #

basicUnsafeIndexM :: Vector (Product a) -> Int -> Box (Product a) Source #

basicUnsafeCopy :: Mutable Vector s (Product a) -> Vector (Product a) -> ST s () Source #

elemseq :: Vector (Product a) -> Product a -> b -> b Source #

Unbox a => Vector Vector (Sum a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Sum a) -> ST s (Vector (Sum a)) Source #

basicUnsafeThaw :: Vector (Sum a) -> ST s (Mutable Vector s (Sum a)) Source #

basicLength :: Vector (Sum a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Sum a) -> Vector (Sum a) Source #

basicUnsafeIndexM :: Vector (Sum a) -> Int -> Box (Sum a) Source #

basicUnsafeCopy :: Mutable Vector s (Sum a) -> Vector (Sum a) -> ST s () Source #

elemseq :: Vector (Sum a) -> Sum a -> b -> b Source #

Prim a => Vector Vector (UnboxViaPrim a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (UnboxViaPrim a) -> ST s (Vector (UnboxViaPrim a)) Source #

basicUnsafeThaw :: Vector (UnboxViaPrim a) -> ST s (Mutable Vector s (UnboxViaPrim a)) Source #

basicLength :: Vector (UnboxViaPrim a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (UnboxViaPrim a) -> Vector (UnboxViaPrim a) Source #

basicUnsafeIndexM :: Vector (UnboxViaPrim a) -> Int -> Box (UnboxViaPrim a) Source #

basicUnsafeCopy :: Mutable Vector s (UnboxViaPrim a) -> Vector (UnboxViaPrim a) -> ST s () Source #

elemseq :: Vector (UnboxViaPrim a) -> UnboxViaPrim a -> b -> b Source #

(Unbox a, Unbox b) => Vector Vector (Arg a b) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Arg a b) -> ST s (Vector (Arg a b)) Source #

basicUnsafeThaw :: Vector (Arg a b) -> ST s (Mutable Vector s (Arg a b)) Source #

basicLength :: Vector (Arg a b) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Arg a b) -> Vector (Arg a b) Source #

basicUnsafeIndexM :: Vector (Arg a b) -> Int -> Box (Arg a b) Source #

basicUnsafeCopy :: Mutable Vector s (Arg a b) -> Vector (Arg a b) -> ST s () Source #

elemseq :: Vector (Arg a b) -> Arg a b -> b0 -> b0 Source #

(IsoUnbox a b, Unbox b) => Vector Vector (As a b) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (As a b) -> ST s (Vector (As a b)) Source #

basicUnsafeThaw :: Vector (As a b) -> ST s (Mutable Vector s (As a b)) Source #

basicLength :: Vector (As a b) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (As a b) -> Vector (As a b) Source #

basicUnsafeIndexM :: Vector (As a b) -> Int -> Box (As a b) Source #

basicUnsafeCopy :: Mutable Vector s (As a b) -> Vector (As a b) -> ST s () Source #

elemseq :: Vector (As a b) -> As a b -> b0 -> b0 Source #

(Unbox a, Unbox b) => Vector Vector (a, b) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (a, b) -> ST s (Vector (a, b)) Source #

basicUnsafeThaw :: Vector (a, b) -> ST s (Mutable Vector s (a, b)) Source #

basicLength :: Vector (a, b) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (a, b) -> Vector (a, b) Source #

basicUnsafeIndexM :: Vector (a, b) -> Int -> Box (a, b) Source #

basicUnsafeCopy :: Mutable Vector s (a, b) -> Vector (a, b) -> ST s () Source #

elemseq :: Vector (a, b) -> (a, b) -> b0 -> b0 Source #

Unbox a => Vector Vector (Const a b) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Const a b) -> ST s (Vector (Const a b)) Source #

basicUnsafeThaw :: Vector (Const a b) -> ST s (Mutable Vector s (Const a b)) Source #

basicLength :: Vector (Const a b) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Const a b) -> Vector (Const a b) Source #

basicUnsafeIndexM :: Vector (Const a b) -> Int -> Box (Const a b) Source #

basicUnsafeCopy :: Mutable Vector s (Const a b) -> Vector (Const a b) -> ST s () Source #

elemseq :: Vector (Const a b) -> Const a b -> b0 -> b0 Source #

Unbox (f a) => Vector Vector (Alt f a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Alt f a) -> ST s (Vector (Alt f a)) Source #

basicUnsafeThaw :: Vector (Alt f a) -> ST s (Mutable Vector s (Alt f a)) Source #

basicLength :: Vector (Alt f a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Alt f a) -> Vector (Alt f a) Source #

basicUnsafeIndexM :: Vector (Alt f a) -> Int -> Box (Alt f a) Source #

basicUnsafeCopy :: Mutable Vector s (Alt f a) -> Vector (Alt f a) -> ST s () Source #

elemseq :: Vector (Alt f a) -> Alt f a -> b -> b Source #

(Unbox a, Unbox b, Unbox c) => Vector Vector (a, b, c) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (a, b, c) -> ST s (Vector (a, b, c)) Source #

basicUnsafeThaw :: Vector (a, b, c) -> ST s (Mutable Vector s (a, b, c)) Source #

basicLength :: Vector (a, b, c) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (a, b, c) -> Vector (a, b, c) Source #

basicUnsafeIndexM :: Vector (a, b, c) -> Int -> Box (a, b, c) Source #

basicUnsafeCopy :: Mutable Vector s (a, b, c) -> Vector (a, b, c) -> ST s () Source #

elemseq :: Vector (a, b, c) -> (a, b, c) -> b0 -> b0 Source #

(Unbox a, Unbox b, Unbox c, Unbox d) => Vector Vector (a, b, c, d) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (a, b, c, d) -> ST s (Vector (a, b, c, d)) Source #

basicUnsafeThaw :: Vector (a, b, c, d) -> ST s (Mutable Vector s (a, b, c, d)) Source #

basicLength :: Vector (a, b, c, d) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (a, b, c, d) -> Vector (a, b, c, d) Source #

basicUnsafeIndexM :: Vector (a, b, c, d) -> Int -> Box (a, b, c, d) Source #

basicUnsafeCopy :: Mutable Vector s (a, b, c, d) -> Vector (a, b, c, d) -> ST s () Source #

elemseq :: Vector (a, b, c, d) -> (a, b, c, d) -> b0 -> b0 Source #

Unbox (f (g a)) => Vector Vector (Compose f g a) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (Compose f g a) -> ST s (Vector (Compose f g a)) Source #

basicUnsafeThaw :: Vector (Compose f g a) -> ST s (Mutable Vector s (Compose f g a)) Source #

basicLength :: Vector (Compose f g a) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (Compose f g a) -> Vector (Compose f g a) Source #

basicUnsafeIndexM :: Vector (Compose f g a) -> Int -> Box (Compose f g a) Source #

basicUnsafeCopy :: Mutable Vector s (Compose f g a) -> Vector (Compose f g a) -> ST s () Source #

elemseq :: Vector (Compose f g a) -> Compose f g a -> b -> b Source #

(Unbox a, Unbox b, Unbox c, Unbox d, Unbox e) => Vector Vector (a, b, c, d, e) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (a, b, c, d, e) -> ST s (Vector (a, b, c, d, e)) Source #

basicUnsafeThaw :: Vector (a, b, c, d, e) -> ST s (Mutable Vector s (a, b, c, d, e)) Source #

basicLength :: Vector (a, b, c, d, e) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (a, b, c, d, e) -> Vector (a, b, c, d, e) Source #

basicUnsafeIndexM :: Vector (a, b, c, d, e) -> Int -> Box (a, b, c, d, e) Source #

basicUnsafeCopy :: Mutable Vector s (a, b, c, d, e) -> Vector (a, b, c, d, e) -> ST s () Source #

elemseq :: Vector (a, b, c, d, e) -> (a, b, c, d, e) -> b0 -> b0 Source #

(Unbox a, Unbox b, Unbox c, Unbox d, Unbox e, Unbox f) => Vector Vector (a, b, c, d, e, f) |

Instance details

Defined in Data.Vector.Unboxed.Base

Methods

basicUnsafeFreeze :: Mutable Vector s (a, b, c, d, e, f) -> ST s (Vector (a, b, c, d, e, f)) Source #

basicUnsafeThaw :: Vector (a, b, c, d, e, f) -> ST s (Mutable Vector s (a, b, c, d, e, f)) Source #

basicLength :: Vector (a, b, c, d, e, f) -> Int Source #

basicUnsafeSlice :: Int -> Int -> Vector (a, b, c, d, e, f) -> Vector (a, b, c, d, e, f) Source #

basicUnsafeIndexM :: Vector (a, b, c, d, e, f) -> Int -> Box (a, b, c, d, e, f) Source #

basicUnsafeCopy :: Mutable Vector s (a, b, c, d, e, f) -> Vector (a, b, c, d, e, f) -> ST s () Source #

elemseq :: Vector (a, b, c, d, e, f) -> (a, b, c, d, e, f) -> b0 -> b0 Source #

# Accessors

## Length information

length :: Vector v a => v a -> Int Source #

O(1) Yield the length of the vector.

null :: Vector v a => v a -> Bool Source #

O(1) Test whether a vector is empty.

## Indexing

(!?) :: Vector v a => v a -> Int -> Maybe a infixl 9 Source #

O(1) Safe indexing.

## Extracting subvectors

slice Source #

Arguments

:: (HasCallStack, Vector v a) |
=> Int | `i` starting index
-> Int | `n` length
-> v a |
-> v a |

O(1) Yield a slice of the vector without copying it. The vector must contain at least `i+n` elements.

take :: Vector v a => Int -> v a -> v a Source #

O(1) Yield the first `n` elements without copying. The vector may contain less than `n` elements, in which case it is returned unchanged.

drop :: Vector v a => Int -> v a -> v a Source #

O(1) Yield all but the first `n` elements without copying. The vector may contain less than `n` elements, in which case an empty vector is returned.

splitAt :: Vector v a => Int -> v a -> (v a, v a) Source #

O(1) Yield the first `n` elements paired with the remainder, without copying.

Note that ``splitAt` n v` is equivalent to `(`take` n v, `drop` n v)`, but slightly more efficient.

Since: vector-0.7.1

# Construction

## Initialisation

empty :: Vector v a => v a Source #

O(1) The empty vector.

singleton :: Vector v a => a -> v a Source #

O(1) A vector with exactly one element.

replicate :: Vector v a => Int -> a -> v a Source #

O(n) A vector of the given length with the same value in each position.

generate :: Vector v a => Int -> (Int -> a) -> v a Source #

O(n) Construct a vector of the given length by applying the function to each index.

iterateN :: Vector v a => Int -> (a -> a) -> a -> v a Source #

O(n) Apply the function \(\max(n - 1, 0)\) times to an initial value, producing a vector of length \(\max(n, 0)\). The 0th element will contain the initial value, which is why there is one less function application than the number of elements in the produced vector.

\( \underbrace{x, f (x), f (f (x)), \ldots}_{\max(0,n)\rm{~elements}} \)

Since: vector-0.7.1

## Monadic initialisation

replicateM :: (Monad m, Vector v a) => Int -> m a -> m (v a) Source #

O(n) Execute the monadic action the given number of times and store the results in a vector.

generateM :: (Monad m, Vector v a) => Int -> (Int -> m a) -> m (v a) Source #

O(n) Construct a vector of the given length by applying the monadic action to each index.

iterateNM :: (Monad m, Vector v a) => Int -> (a -> m a) -> a -> m (v a) Source #

O(n) Apply the monadic function \(\max(n - 1, 0)\) times to an initial value, producing a vector of length \(\max(n, 0)\). The 0th element will contain the initial value, which is why there is one less function application than the number of elements in the produced vector.

For a non-monadic version, see `iterateN`.

Since: vector-0.12.0.0

create :: Vector v a => (forall s. ST s (Mutable v s a)) -> v a Source #

Execute the monadic action and freeze the resulting vector.

    create (do { v <- new 2; write v 0 'a'; write v 1 'b'; return v }) = <a,b>

createT :: (Traversable f, Vector v a) => (forall s. ST s (f (Mutable v s a))) -> f (v a) Source #

Execute the monadic action and freeze the resulting vectors.

## Unfolding

unfoldr :: Vector v a => (b -> Maybe (a, b)) -> b -> v a Source #

O(n) Construct a vector by repeatedly applying the generator function to a seed. The generator function yields `Just` the next element and the new seed or `Nothing` if there are no more elements.

    unfoldr (\n -> if n == 0 then Nothing else Just (n,n-1)) 10
     = <10,9,8,7,6,5,4,3,2,1>

unfoldrN :: Vector v a => Int -> (b -> Maybe (a, b)) -> b -> v a Source #

O(n) Construct a vector with at most `n` elements by repeatedly applying the generator function to a seed. The generator function yields `Just` the next element and the new seed or `Nothing` if there are no more elements.

    unfoldrN 3 (\n -> Just (n,n-1)) 10 = <10,9,8>

unfoldrM :: (Monad m, Vector v a) => (b -> m (Maybe (a, b))) -> b -> m (v a) Source #

O(n) Construct a vector by repeatedly applying the monadic generator function to a seed. The generator function yields `Just` the next element and the new seed or `Nothing` if there are no more elements.

unfoldrNM :: (Monad m, Vector v a) => Int -> (b -> m (Maybe (a, b))) -> b -> m (v a) Source #

O(n) Construct a vector by repeatedly applying the monadic generator function to a seed. The generator function yields `Just` the next element and the new seed or `Nothing` if there are no more elements.

constructN :: Vector v a => Int -> (v a -> a) -> v a Source #

O(n) Construct a vector with `n` elements by repeatedly applying the generator function to the already constructed part of the vector.

    constructN 3 f = let a = f <> ; b = f <a> ; c = f <a,b> in <a,b,c>

constructrN :: Vector v a => Int -> (v a -> a) -> v a Source #

O(n) Construct a vector with `n` elements from right to left by repeatedly applying the generator function to the already constructed part of the vector.

    constructrN 3 f = let a = f <> ; b = f<a> ; c = f <b,a> in <c,b,a>

## Enumeration

enumFromN :: (Vector v a, Num a) => a -> Int -> v a Source #

O(n) Yield a vector of the given length, containing the values `x`, `x+1` etc. This operation is usually more efficient than `enumFromTo`.

    enumFromN 5 3 = <5,6,7>

enumFromStepN :: (Vector v a, Num a) => a -> a -> Int -> v a Source #

O(n) Yield a vector of the given length, containing the values `x`, `x+y`, `x+y+y` etc. This operations is usually more efficient than `enumFromThenTo`.

    enumFromStepN 1 2 5 = <1,3,5,7,9>

enumFromTo :: (Vector v a, Enum a) => a -> a -> v a Source #

O(n) Enumerate values from `x` to `y`.

WARNING: This operation can be very inefficient. If possible, use `enumFromN` instead.

enumFromThenTo :: (Vector v a, Enum a) => a -> a -> a -> v a Source #

O(n) Enumerate values from `x` to `y` with a specific step `z`.

WARNING: This operation can be very inefficient. If possible, use `enumFromStepN` instead.

## Concatenation

cons :: Vector v a => a -> v a -> v a Source #

O(n) Prepend an element.

snoc :: Vector v a => v a -> a -> v a Source #

O(n) Append an element.

(++) :: Vector v a => v a -> v a -> v a infixr 5 Source #

O(m+n) Concatenate two vectors.

concat :: Vector v a => [v a] -> v a Source #

O(n) Concatenate all vectors in the list.

concatNE :: Vector v a => NonEmpty (v a) -> v a Source #

O(n) Concatenate all vectors in the non-empty list.

## Restricting memory usage

force :: Vector v a => v a -> v a Source #

O(n) Yield the argument, but force it not to retain any extra memory, possibly by copying it.

This is especially useful when dealing with slices. For example:

    force (slice 0 2 <huge vector>)

Here, the slice retains a reference to the huge vector. Forcing it creates a copy of just the elements that belong to the slice and allows the huge vector to be garbage collected.

# Modifying vectors

## Permutations

reverse :: Vector v a => v a -> v a Source #

O(n) Reverse a vector.

## Safe destructive update

modify :: Vector v a => (forall s. Mutable v s a -> ST s ()) -> v a -> v a Source #

Apply a destructive operation to a vector. The operation may be performed in place if it is safe to do so and will modify a copy of the vector otherwise (see `New` for details).

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> import qualified Data.Vector.Mutable as MV
    >>> V.modify (\v -> MV.write v 0 'x') $ V.replicate 4 'a'
    "xaaa"

# Elementwise operations

## Indexing

indexed :: (Vector v a, Vector v (Int, a)) => v a -> v (Int, a) Source #

O(n) Pair each element in a vector with its index.

## Mapping

map :: (Vector v a, Vector v b) => (a -> b) -> v a -> v b Source #

O(n) Map a function over a vector.

imap :: (Vector v a, Vector v b) => (Int -> a -> b) -> v a -> v b Source #

O(n) Apply a function to every element of a vector and its index.

concatMap :: (Vector v a, Vector v b) => (a -> v b) -> v a -> v b Source #

Map a function over a vector and concatenate the results.

## Monadic mapping

mapM :: (Monad m, Vector v a, Vector v b) => (a -> m b) -> v a -> m (v b) Source #

O(n) Apply the monadic action to all elements of the vector, yielding a vector of results.

imapM :: (Monad m, Vector v a, Vector v b) => (Int -> a -> m b) -> v a -> m (v b) Source #

O(n) Apply the monadic action to every element of a vector and its index, yielding a vector of results.

mapM_ :: (Monad m, Vector v a) => (a -> m b) -> v a -> m () Source #

O(n) Apply the monadic action to all elements of a vector and ignore the results.

imapM_ :: (Monad m, Vector v a) => (Int -> a -> m b) -> v a -> m () Source #

O(n) Apply the monadic action to every element of a vector and its index, ignoring the results.

forM :: (Monad m, Vector v a, Vector v b) => v a -> (a -> m b) -> m (v b) Source #

O(n) Apply the monadic action to all elements of the vector, yielding a vector of results. Equivalent to `flip `mapM``.

forM_ :: (Monad m, Vector v a) => v a -> (a -> m b) -> m () Source #

O(n) Apply the monadic action to all elements of a vector and ignore the results. Equivalent to `flip `mapM_``.

## Zipping

zipWith :: (Vector v a, Vector v b, Vector v c) => (a -> b -> c) -> v a -> v b -> v c Source #

O(min(m,n)) Zip two vectors with the given function.

zipWith3 :: (Vector v a, Vector v b, Vector v c, Vector v d) => (a -> b -> c -> d) -> v a -> v b -> v c -> v d Source #

Zip three vectors with the given function.

zipWith4 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e) => (a -> b -> c -> d -> e) -> v a -> v b -> v c -> v d -> v e Source #

zipWith5 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f) => (a -> b -> c -> d -> e -> f) -> v a -> v b -> v c -> v d -> v e -> v f Source #

zipWith6 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f, Vector v g) => (a -> b -> c -> d -> e -> f -> g) -> v a -> v b -> v c -> v d -> v e -> v f -> v g Source #

izipWith :: (Vector v a, Vector v b, Vector v c) => (Int -> a -> b -> c) -> v a -> v b -> v c Source #

O(min(m,n)) Zip two vectors with a function that also takes the elements' indices.

izipWith3 :: (Vector v a, Vector v b, Vector v c, Vector v d) => (Int -> a -> b -> c -> d) -> v a -> v b -> v c -> v d Source #

Zip three vectors and their indices with the given function.

izipWith4 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e) => (Int -> a -> b -> c -> d -> e) -> v a -> v b -> v c -> v d -> v e Source #

izipWith5 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f) => (Int -> a -> b -> c -> d -> e -> f) -> v a -> v b -> v c -> v d -> v e -> v f Source #

izipWith6 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f, Vector v g) => (Int -> a -> b -> c -> d -> e -> f -> g) -> v a -> v b -> v c -> v d -> v e -> v f -> v g Source #

zip :: (Vector v a, Vector v b, Vector v (a, b)) => v a -> v b -> v (a, b) Source #

O(min(m,n)) Zip two vectors.

zip3 :: (Vector v a, Vector v b, Vector v c, Vector v (a, b, c)) => v a -> v b -> v c -> v (a, b, c) Source #

Zip together three vectors into a vector of triples.

zip4 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v (a, b, c, d)) => v a -> v b -> v c -> v d -> v (a, b, c, d) Source #

zip5 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v (a, b, c, d, e)) => v a -> v b -> v c -> v d -> v e -> v (a, b, c, d, e) Source #

zip6 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f, Vector v (a, b, c, d, e, f)) => v a -> v b -> v c -> v d -> v e -> v f -> v (a, b, c, d, e, f) Source #

## Monadic zipping

zipWithM :: (Monad m, Vector v a, Vector v b, Vector v c) => (a -> b -> m c) -> v a -> v b -> m (v c) Source #

O(min(m,n)) Zip the two vectors with the monadic action and yield a vector of results.

izipWithM :: (Monad m, Vector v a, Vector v b, Vector v c) => (Int -> a -> b -> m c) -> v a -> v b -> m (v c) Source #

O(min(m,n)) Zip the two vectors with a monadic action that also takes the element index and yield a vector of results.

zipWithM_ :: (Monad m, Vector v a, Vector v b) => (a -> b -> m c) -> v a -> v b -> m () Source #

O(min(m,n)) Zip the two vectors with the monadic action and ignore the results.

izipWithM_ :: (Monad m, Vector v a, Vector v b) => (Int -> a -> b -> m c) -> v a -> v b -> m () Source #

O(min(m,n)) Zip the two vectors with a monadic action that also takes the element index and ignore the results.

## Unzipping

unzip :: (Vector v a, Vector v b, Vector v (a, b)) => v (a, b) -> (v a, v b) Source #

O(min(m,n)) Unzip a vector of pairs.

unzip3 :: (Vector v a, Vector v b, Vector v c, Vector v (a, b, c)) => v (a, b, c) -> (v a, v b, v c) Source #

unzip4 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v (a, b, c, d)) => v (a, b, c, d) -> (v a, v b, v c, v d) Source #

unzip5 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v (a, b, c, d, e)) => v (a, b, c, d, e) -> (v a, v b, v c, v d, v e) Source #

unzip6 :: (Vector v a, Vector v b, Vector v c, Vector v d, Vector v e, Vector v f, Vector v (a, b, c, d, e, f)) => v (a, b, c, d, e, f) -> (v a, v b, v c, v d, v e, v f) Source #

# Working with predicates

## Filtering

filter :: Vector v a => (a -> Bool) -> v a -> v a Source #

O(n) Drop all elements that do not satisfy the predicate.

ifilter :: Vector v a => (Int -> a -> Bool) -> v a -> v a Source #

O(n) Drop all elements that do not satisfy the predicate which is applied to the values and their indices.

uniq :: (Vector v a, Eq a) => v a -> v a Source #

O(n) Drop repeated adjacent elements. The first element in each group is returned.

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.uniq $ V.fromList [1,3,3,200,3]
    [1,3,200,3]
    >>> import Data.Semigroup
    >>> V.uniq $ V.fromList [ Arg 1 'a', Arg 1 'b', Arg 1 'c']
    [Arg 1 'a']

mapMaybe :: (Vector v a, Vector v b) => (a -> Maybe b) -> v a -> v b Source #

O(n) Map the values and collect the `Just` results.

imapMaybe :: (Vector v a, Vector v b) => (Int -> a -> Maybe b) -> v a -> v b Source #

O(n) Map the indices/values and collect the `Just` results.

filterM :: (Monad m, Vector v a) => (a -> m Bool) -> v a -> m (v a) Source #

O(n) Drop all elements that do not satisfy the monadic predicate.

takeWhile :: Vector v a => (a -> Bool) -> v a -> v a Source #

O(n) Yield the longest prefix of elements satisfying the predicate. The current implementation is not copy-free, unless the result vector is fused away.

dropWhile :: Vector v a => (a -> Bool) -> v a -> v a Source #

O(n) Drop the longest prefix of elements that satisfy the predicate without copying.

## Partitioning

partition :: Vector v a => (a -> Bool) -> v a -> (v a, v a) Source #

O(n) Split the vector in two parts, the first one containing those elements that satisfy the predicate and the second one those that don't. The relative order of the elements is preserved at the cost of a sometimes reduced performance compared to `unstablePartition`.

unstablePartition :: Vector v a => (a -> Bool) -> v a -> (v a, v a) Source #

O(n) Split the vector in two parts, the first one containing those elements that satisfy the predicate and the second one those that don't. The order of the elements is not preserved, but the operation is often faster than `partition`.

span :: Vector v a => (a -> Bool) -> v a -> (v a, v a) Source #

O(n) Split the vector into the longest prefix of elements that satisfy the predicate and the rest without copying.

break :: Vector v a => (a -> Bool) -> v a -> (v a, v a) Source #

O(n) Split the vector into the longest prefix of elements that do not satisfy the predicate and the rest without copying.

## Searching

elem :: (Vector v a, Eq a) => a -> v a -> Bool infix 4 Source #

O(n) Check if the vector contains an element.

notElem :: (Vector v a, Eq a) => a -> v a -> Bool infix 4 Source #

O(n) Check if the vector does not contain an element (inverse of `elem`).

find :: Vector v a => (a -> Bool) -> v a -> Maybe a Source #

O(n) Yield `Just` the first element matching the predicate or `Nothing` if no such element exists.

findIndex :: Vector v a => (a -> Bool) -> v a -> Maybe Int Source #

O(n) Yield `Just` the index of the first element matching the predicate or `Nothing` if no such element exists.

findIndices :: (Vector v a, Vector v Int) => (a -> Bool) -> v a -> v Int Source #

O(n) Yield the indices of elements satisfying the predicate in ascending order.

elemIndex :: (Vector v a, Eq a) => a -> v a -> Maybe Int Source #

O(n) Yield `Just` the index of the first occurrence of the given element or `Nothing` if the vector does not contain the element. This is a specialised version of `findIndex`.

elemIndices :: (Vector v a, Vector v Int, Eq a) => a -> v a -> v Int Source #

O(n) Yield the indices of all occurrences of the given element in ascending order. This is a specialised version of `findIndices`.

# Folding

foldl :: Vector v b => (a -> b -> a) -> a -> v b -> a Source #

O(n) Left fold.

foldl' :: Vector v b => (a -> b -> a) -> a -> v b -> a Source #

O(n) Left fold with strict accumulator.

foldr :: Vector v a => (a -> b -> b) -> b -> v a -> b Source #

O(n) Right fold.

foldr' :: Vector v a => (a -> b -> b) -> b -> v a -> b Source #

O(n) Right fold with a strict accumulator.

ifoldl :: Vector v b => (a -> Int -> b -> a) -> a -> v b -> a Source #

O(n) Left fold using a function applied to each element and its index.

ifoldl' :: Vector v b => (a -> Int -> b -> a) -> a -> v b -> a Source #

O(n) Left fold with strict accumulator using a function applied to each element and its index.

ifoldr :: Vector v a => (Int -> a -> b -> b) -> b -> v a -> b Source #

O(n) Right fold using a function applied to each element and its index.

ifoldr' :: Vector v a => (Int -> a -> b -> b) -> b -> v a -> b Source #

O(n) Right fold with strict accumulator using a function applied to each element and its index.

## Specialised folds

all :: Vector v a => (a -> Bool) -> v a -> Bool Source #

O(n) Check if all elements satisfy the predicate.

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.all even $ V.fromList [2, 4, 12]
    True
    >>> V.all even $ V.fromList [2, 4, 13]
    False
    >>> V.all even (V.empty :: V.Vector Int)
    True

any :: Vector v a => (a -> Bool) -> v a -> Bool Source #

O(n) Check if any element satisfies the predicate.

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.any even $ V.fromList [1, 3, 7]
    False
    >>> V.any even $ V.fromList [3, 2, 13]
    True
    >>> V.any even (V.empty :: V.Vector Int)
    False

and :: Vector v Bool => v Bool -> Bool Source #

O(n) Check if all elements are `True`.

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.and $ V.fromList [True, False]
    False
    >>> V.and V.empty
    True

or :: Vector v Bool => v Bool -> Bool Source #

O(n) Check if any element is `True`.

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.or $ V.fromList [True, False]
    True
    >>> V.or V.empty
    False

sum :: (Vector v a, Num a) => v a -> a Source #

O(n) Compute the sum of the elements.

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.sum $ V.fromList [300,20,1]
    321
    >>> V.sum (V.empty :: V.Vector Int)
    0

product :: (Vector v a, Num a) => v a -> a Source #

O(n) Compute the product of the elements.

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.product $ V.fromList [1,2,3,4]
    24
    >>> V.product (V.empty :: V.Vector Int)
    1

## Monadic folds

foldM :: (Monad m, Vector v b) => (a -> b -> m a) -> a -> v b -> m a Source #

O(n) Monadic fold.

ifoldM :: (Monad m, Vector v b) => (a -> Int -> b -> m a) -> a -> v b -> m a Source #

O(n) Monadic fold using a function applied to each element and its index.

foldM' :: (Monad m, Vector v b) => (a -> b -> m a) -> a -> v b -> m a Source #

O(n) Monadic fold with strict accumulator.

ifoldM' :: (Monad m, Vector v b) => (a -> Int -> b -> m a) -> a -> v b -> m a Source #

O(n) Monadic fold with strict accumulator using a function applied to each element and its index.

foldM_ :: (Monad m, Vector v b) => (a -> b -> m a) -> a -> v b -> m () Source #

O(n) Monadic fold that discards the result.

ifoldM_ :: (Monad m, Vector v b) => (a -> Int -> b -> m a) -> a -> v b -> m () Source #

O(n) Monadic fold that discards the result using a function applied to each element and its index.

foldM'_ :: (Monad m, Vector v b) => (a -> b -> m a) -> a -> v b -> m () Source #

O(n) Monadic fold with strict accumulator that discards the result.

ifoldM'_ :: (Monad m, Vector v b) => (a -> Int -> b -> m a) -> a -> v b -> m () Source #

O(n) Monadic fold with strict accumulator that discards the result using a function applied to each element and its index.

## Monadic sequencing

sequence :: (Monad m, Vector v a, Vector v (m a)) => v (m a) -> m (v a) Source #

Evaluate each action and collect the results.

sequence_ :: (Monad m, Vector v (m a)) => v (m a) -> m () Source #

Evaluate each action and discard the results.

# Prefix sums (scans)

prescanl :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a Source #

O(n) Left-to-right prescan.

    prescanl f z = init . scanl f z

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.prescanl (+) 0 (V.fromList [1,2,3,4])
    [0,1,3,6]

prescanl' :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a Source #

O(n) Left-to-right prescan with strict accumulator.

postscanl :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a Source #

O(n) Left-to-right postscan.

    postscanl f z = tail . scanl f z

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.postscanl (+) 0 (V.fromList [1,2,3,4])
    [1,3,6,10]

postscanl' :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a Source #

O(n) Left-to-right postscan with strict accumulator.

scanl :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a Source #

O(n) Left-to-right scan.

    scanl f z <x1,...,xn> = <y1,...,y(n+1)>
      where y1 = z
            yi = f y(i-1) x(i-1)

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.scanl (+) 0 (V.fromList [1,2,3,4])
    [0,1,3,6,10]

scanl' :: (Vector v a, Vector v b) => (a -> b -> a) -> a -> v b -> v a Source #

O(n) Left-to-right scan with strict accumulator.

iscanl :: (Vector v a, Vector v b) => (Int -> a -> b -> a) -> a -> v b -> v a Source #

O(n) Left-to-right scan over a vector with its index.

iscanl' :: (Vector v a, Vector v b) => (Int -> a -> b -> a) -> a -> v b -> v a Source #

O(n) Left-to-right scan over a vector (strictly) with its index.

prescanr :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b Source #

O(n) Right-to-left prescan.

    prescanr f z = reverse . prescanl (flip f) z . reverse

prescanr' :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b Source #

O(n) Right-to-left prescan with strict accumulator.

postscanr :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b Source #

O(n) Right-to-left postscan.

postscanr' :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b Source #

O(n) Right-to-left postscan with strict accumulator.

scanr :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b Source #

O(n) Right-to-left scan.

scanr' :: (Vector v a, Vector v b) => (a -> b -> b) -> b -> v a -> v b Source #

O(n) Right-to-left scan with strict accumulator.

iscanr :: (Vector v a, Vector v b) => (Int -> a -> b -> b) -> b -> v a -> v b Source #

O(n) Right-to-left scan over a vector with its index.

iscanr' :: (Vector v a, Vector v b) => (Int -> a -> b -> b) -> b -> v a -> v b Source #

O(n) Right-to-left scan over a vector (strictly) with its index.

# Conversions

## Lists

toList :: Vector v a => v a -> [a] Source #

O(n) Convert a vector to a list.

fromList :: Vector v a => [a] -> v a Source #

O(n) Convert a list to a vector.

fromListN :: Vector v a => Int -> [a] -> v a Source #

O(n) Convert the first `n` elements of a list to a vector. It's expected that the supplied list will be exactly `n` elements long. As an optimization, this function allocates a buffer for `n` elements, which could be used for DoS-attacks by exhausting the memory if an attacker controls that parameter.

    fromListN n xs = fromList (take n xs)

#### Examples

Expand

    >>> import qualified Data.Vector as V
    >>> V.fromListN 3 [1,2,3,4,5]
    [1,2,3]
    >>> V.fromListN 3 [1]
    [1]

## Different vector types

convert :: (Vector v a, Vector w a) => v a -> w a Source #

O(n) Convert between different vector types.

## Mutable vectors

freeze :: (PrimMonad m, Vector v a) => Mutable v (PrimState m) a -> m (v a) Source #

O(n) Yield an immutable copy of the mutable vector.

thaw :: (PrimMonad m, Vector v a) => v a -> m (Mutable v (PrimState m) a) Source #

O(n) Yield a mutable copy of an immutable vector.

copy :: (HasCallStack, PrimMonad m, Vector v a) => Mutable v (PrimState m) a -> v a -> m () Source #

O(n) Copy an immutable vector into a mutable one. The two vectors must have the same length.

# Fusion support

## Conversion to/from Bundles

stream :: Vector v a => v a -> Bundle v a Source #

O(1) Convert a vector to a `Bundle`.

unstream :: Vector v a => Bundle v a -> v a Source #

O(n) Construct a vector from a `Bundle`.

streamR :: forall v a (u :: Type -> Type). Vector v a => v a -> Bundle u a Source #

O(1) Convert a vector to a `Bundle`, proceeding from right to left.

unstreamR :: Vector v a => Bundle v a -> v a Source #

O(n) Construct a vector from a `Bundle`, proceeding from right to left.

## Recycling support

new :: Vector v a => New v a -> v a Source #

Construct a vector from a monadic initialiser.

clone :: Vector v a => v a -> New v a Source #

Convert a vector to an initialiser which, when run, produces a copy of the vector.

# Utilities

## Comparisons

eq :: (Vector v a, Eq a) => v a -> v a -> Bool Source #

O(n) Check if two vectors are equal. All `Vector` instances are also instances of `Eq` and it is usually more appropriate to use those. This function is primarily intended for implementing `Eq` instances for new vector types.

cmp :: (Vector v a, Ord a) => v a -> v a -> Ordering Source #

O(n) Compare two vectors lexicographically. All `Vector` instances are also instances of `Ord` and it is usually more appropriate to use those. This function is primarily intended for implementing `Ord` instances for new vector types.

eqBy :: (Vector v a, Vector v b) => (a -> b -> Bool) -> v a -> v b -> Bool Source #

O(n) Check if two vectors are equal using the supplied equality predicate.

cmpBy :: (Vector v a, Vector v b) => (a -> b -> Ordering) -> v a -> v b -> Ordering Source #

O(n) Compare two vectors using the supplied comparison function for vector elements. Comparison works the same as for lists.

    cmpBy compare == cmp

## Show and Read

showsPrec :: (Vector v a, Show a) => Int -> v a -> ShowS Source #

Generic definition of `showsPrec`.

readPrec :: (Vector v a, Read a) => ReadPrec (v a) Source #

Generic definition of `readPrec`.

liftShowsPrec :: Vector v a => (Int -> a -> ShowS) -> ([a] -> ShowS) -> Int -> v a -> ShowS Source #

liftReadsPrec :: Vector v a => (Int -> ReadS a) -> ReadS [a] -> Int -> ReadS (v a) Source #

Note: uses `ReadS`.

## `Data` and `Typeable`

gfoldl :: (Vector v a, Data a) => (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> v a -> c (v a) Source #

Generic definion of `gfoldl` that views a `Vector` as a list.

dataCast :: (Vector v a, Data a, Typeable v, Typeable t) => (forall d. Data d => c (t d)) -> Maybe (c (v a)) Source #

mkType :: String -> DataType Source #