rio-0.1.22.0: A standard library for Haskell
Safe HaskellNone
LanguageHaskell2010

RIO.Vector.Storable

Description

Storable Vector. Import as:

import qualified RIO.Vector.Storable as VS

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

Synopsis

Storable vectors

data Vector a #

Storable-based vectors

Instances

Instances details
NFData1 Vector

Since: vector-0.12.1.0

Instance details

Defined in Data.Vector.Storable

Methods

liftRnf :: (a -> ()) -> Vector a -> () #

Storable a => Vector Vector a 
Instance details

Defined in Data.Vector.Storable

Methods

basicUnsafeFreeze :: PrimMonad m => Mutable Vector (PrimState m) a -> m (Vector a) #

basicUnsafeThaw :: PrimMonad m => Vector a -> m (Mutable Vector (PrimState m) a) #

basicLength :: Vector a -> Int #

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

basicUnsafeIndexM :: Monad m => Vector a -> Int -> m a #

basicUnsafeCopy :: PrimMonad m => Mutable Vector (PrimState m) a -> Vector a -> m () #

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

Storable a => IsList (Vector a) 
Instance details

Defined in Data.Vector.Storable

Associated Types

type Item (Vector a) #

Methods

fromList :: [Item (Vector a)] -> Vector a #

fromListN :: Int -> [Item (Vector a)] -> Vector a #

toList :: Vector a -> [Item (Vector a)] #

(Storable a, Eq a) => Eq (Vector a) 
Instance details

Defined in Data.Vector.Storable

Methods

(==) :: Vector a -> Vector a -> Bool #

(/=) :: Vector a -> Vector a -> Bool #

(Data a, Storable a) => Data (Vector a) 
Instance details

Defined in Data.Vector.Storable

Methods

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

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (Vector a) #

toConstr :: Vector a -> Constr #

dataTypeOf :: Vector a -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c (Vector a)) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (Vector a)) #

gmapT :: (forall b. Data b => b -> b) -> Vector a -> Vector a #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Vector a -> r #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Vector a -> r #

gmapQ :: (forall d. Data d => d -> u) -> Vector a -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Vector a -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Vector a -> m (Vector a) #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Vector a -> m (Vector a) #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Vector a -> m (Vector a) #

(Storable a, Ord a) => Ord (Vector a) 
Instance details

Defined in Data.Vector.Storable

Methods

compare :: Vector a -> Vector a -> Ordering #

(<) :: Vector a -> Vector a -> Bool #

(<=) :: Vector a -> Vector a -> Bool #

(>) :: Vector a -> Vector a -> Bool #

(>=) :: Vector a -> Vector a -> Bool #

max :: Vector a -> Vector a -> Vector a #

min :: Vector a -> Vector a -> Vector a #

(Read a, Storable a) => Read (Vector a) 
Instance details

Defined in Data.Vector.Storable

(Show a, Storable a) => Show (Vector a) 
Instance details

Defined in Data.Vector.Storable

Methods

showsPrec :: Int -> Vector a -> ShowS #

show :: Vector a -> String #

showList :: [Vector a] -> ShowS #

Storable a => Semigroup (Vector a) 
Instance details

Defined in Data.Vector.Storable

Methods

(<>) :: Vector a -> Vector a -> Vector a #

sconcat :: NonEmpty (Vector a) -> Vector a #

stimes :: Integral b => b -> Vector a -> Vector a #

Storable a => Monoid (Vector a) 
Instance details

Defined in Data.Vector.Storable

Methods

mempty :: Vector a #

mappend :: Vector a -> Vector a -> Vector a #

mconcat :: [Vector a] -> Vector a #

NFData (Vector a) 
Instance details

Defined in Data.Vector.Storable

Methods

rnf :: Vector a -> () #

type Mutable Vector 
Instance details

Defined in Data.Vector.Storable

type Item (Vector a) 
Instance details

Defined in Data.Vector.Storable

type Item (Vector a) = a

data MVector s a #

Mutable Storable-based vectors

Constructors

MVector !Int !(ForeignPtr a) 

Instances

Instances details
Storable a => MVector MVector a 
Instance details

Defined in Data.Vector.Storable.Mutable

Methods

basicLength :: MVector s a -> Int #

basicUnsafeSlice :: Int -> Int -> MVector s a -> MVector s a #

basicOverlaps :: MVector s a -> MVector s a -> Bool #

basicUnsafeNew :: PrimMonad m => Int -> m (MVector (PrimState m) a) #

basicInitialize :: PrimMonad m => MVector (PrimState m) a -> m () #

basicUnsafeReplicate :: PrimMonad m => Int -> a -> m (MVector (PrimState m) a) #

basicUnsafeRead :: PrimMonad m => MVector (PrimState m) a -> Int -> m a #

basicUnsafeWrite :: PrimMonad m => MVector (PrimState m) a -> Int -> a -> m () #

basicClear :: PrimMonad m => MVector (PrimState m) a -> m () #

basicSet :: PrimMonad m => MVector (PrimState m) a -> a -> m () #

basicUnsafeCopy :: PrimMonad m => MVector (PrimState m) a -> MVector (PrimState m) a -> m () #

basicUnsafeMove :: PrimMonad m => MVector (PrimState m) a -> MVector (PrimState m) a -> m () #

basicUnsafeGrow :: PrimMonad m => MVector (PrimState m) a -> Int -> m (MVector (PrimState m) a) #

NFData1 (MVector s) 
Instance details

Defined in Data.Vector.Storable.Mutable

Methods

liftRnf :: (a -> ()) -> MVector s a -> () #

NFData (MVector s a) 
Instance details

Defined in Data.Vector.Storable.Mutable

Methods

rnf :: MVector s a -> () #

class Storable a #

The member functions of this class facilitate writing values of primitive types to raw memory (which may have been allocated with the above mentioned routines) and reading values from blocks of raw memory. The class, furthermore, includes support for computing the storage requirements and alignment restrictions of storable types.

Memory addresses are represented as values of type Ptr a, for some a which is an instance of class Storable. The type argument to Ptr helps provide some valuable type safety in FFI code (you can't mix pointers of different types without an explicit cast), while helping the Haskell type system figure out which marshalling method is needed for a given pointer.

All marshalling between Haskell and a foreign language ultimately boils down to translating Haskell data structures into the binary representation of a corresponding data structure of the foreign language and vice versa. To code this marshalling in Haskell, it is necessary to manipulate primitive data types stored in unstructured memory blocks. The class Storable facilitates this manipulation on all types for which it is instantiated, which are the standard basic types of Haskell, the fixed size Int types (Int8, Int16, Int32, Int64), the fixed size Word types (Word8, Word16, Word32, Word64), StablePtr, all types from Foreign.C.Types, as well as Ptr.

Minimal complete definition

sizeOf, alignment, (peek | peekElemOff | peekByteOff), (poke | pokeElemOff | pokeByteOff)

Instances

Instances details
Storable Bool

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Bool -> Int #

alignment :: Bool -> Int #

peekElemOff :: Ptr Bool -> Int -> IO Bool #

pokeElemOff :: Ptr Bool -> Int -> Bool -> IO () #

peekByteOff :: Ptr b -> Int -> IO Bool #

pokeByteOff :: Ptr b -> Int -> Bool -> IO () #

peek :: Ptr Bool -> IO Bool #

poke :: Ptr Bool -> Bool -> IO () #

Storable Char

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Char -> Int #

alignment :: Char -> Int #

peekElemOff :: Ptr Char -> Int -> IO Char #

pokeElemOff :: Ptr Char -> Int -> Char -> IO () #

peekByteOff :: Ptr b -> Int -> IO Char #

pokeByteOff :: Ptr b -> Int -> Char -> IO () #

peek :: Ptr Char -> IO Char #

poke :: Ptr Char -> Char -> IO () #

Storable Double

Since: base-2.1

Instance details

Defined in Foreign.Storable

Storable Float

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Float -> Int #

alignment :: Float -> Int #

peekElemOff :: Ptr Float -> Int -> IO Float #

pokeElemOff :: Ptr Float -> Int -> Float -> IO () #

peekByteOff :: Ptr b -> Int -> IO Float #

pokeByteOff :: Ptr b -> Int -> Float -> IO () #

peek :: Ptr Float -> IO Float #

poke :: Ptr Float -> Float -> IO () #

Storable Int

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Int -> Int #

alignment :: Int -> Int #

peekElemOff :: Ptr Int -> Int -> IO Int #

pokeElemOff :: Ptr Int -> Int -> Int -> IO () #

peekByteOff :: Ptr b -> Int -> IO Int #

pokeByteOff :: Ptr b -> Int -> Int -> IO () #

peek :: Ptr Int -> IO Int #

poke :: Ptr Int -> Int -> IO () #

Storable Int8

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Int8 -> Int #

alignment :: Int8 -> Int #

peekElemOff :: Ptr Int8 -> Int -> IO Int8 #

pokeElemOff :: Ptr Int8 -> Int -> Int8 -> IO () #

peekByteOff :: Ptr b -> Int -> IO Int8 #

pokeByteOff :: Ptr b -> Int -> Int8 -> IO () #

peek :: Ptr Int8 -> IO Int8 #

poke :: Ptr Int8 -> Int8 -> IO () #

Storable Int16

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Int16 -> Int #

alignment :: Int16 -> Int #

peekElemOff :: Ptr Int16 -> Int -> IO Int16 #

pokeElemOff :: Ptr Int16 -> Int -> Int16 -> IO () #

peekByteOff :: Ptr b -> Int -> IO Int16 #

pokeByteOff :: Ptr b -> Int -> Int16 -> IO () #

peek :: Ptr Int16 -> IO Int16 #

poke :: Ptr Int16 -> Int16 -> IO () #

Storable Int32

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Int32 -> Int #

alignment :: Int32 -> Int #

peekElemOff :: Ptr Int32 -> Int -> IO Int32 #

pokeElemOff :: Ptr Int32 -> Int -> Int32 -> IO () #

peekByteOff :: Ptr b -> Int -> IO Int32 #

pokeByteOff :: Ptr b -> Int -> Int32 -> IO () #

peek :: Ptr Int32 -> IO Int32 #

poke :: Ptr Int32 -> Int32 -> IO () #

Storable Int64

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Int64 -> Int #

alignment :: Int64 -> Int #

peekElemOff :: Ptr Int64 -> Int -> IO Int64 #

pokeElemOff :: Ptr Int64 -> Int -> Int64 -> IO () #

peekByteOff :: Ptr b -> Int -> IO Int64 #

pokeByteOff :: Ptr b -> Int -> Int64 -> IO () #

peek :: Ptr Int64 -> IO Int64 #

poke :: Ptr Int64 -> Int64 -> IO () #

Storable Word

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Word -> Int #

alignment :: Word -> Int #

peekElemOff :: Ptr Word -> Int -> IO Word #

pokeElemOff :: Ptr Word -> Int -> Word -> IO () #

peekByteOff :: Ptr b -> Int -> IO Word #

pokeByteOff :: Ptr b -> Int -> Word -> IO () #

peek :: Ptr Word -> IO Word #

poke :: Ptr Word -> Word -> IO () #

Storable Word8

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Word8 -> Int #

alignment :: Word8 -> Int #

peekElemOff :: Ptr Word8 -> Int -> IO Word8 #

pokeElemOff :: Ptr Word8 -> Int -> Word8 -> IO () #

peekByteOff :: Ptr b -> Int -> IO Word8 #

pokeByteOff :: Ptr b -> Int -> Word8 -> IO () #

peek :: Ptr Word8 -> IO Word8 #

poke :: Ptr Word8 -> Word8 -> IO () #

Storable Word16

Since: base-2.1

Instance details

Defined in Foreign.Storable

Storable Word32

Since: base-2.1

Instance details

Defined in Foreign.Storable

Storable Word64

Since: base-2.1

Instance details

Defined in Foreign.Storable

Storable ()

Since: base-4.9.0.0

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: () -> Int #

alignment :: () -> Int #

peekElemOff :: Ptr () -> Int -> IO () #

pokeElemOff :: Ptr () -> Int -> () -> IO () #

peekByteOff :: Ptr b -> Int -> IO () #

pokeByteOff :: Ptr b -> Int -> () -> IO () #

peek :: Ptr () -> IO () #

poke :: Ptr () -> () -> IO () #

Storable CDev 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CDev -> Int #

alignment :: CDev -> Int #

peekElemOff :: Ptr CDev -> Int -> IO CDev #

pokeElemOff :: Ptr CDev -> Int -> CDev -> IO () #

peekByteOff :: Ptr b -> Int -> IO CDev #

pokeByteOff :: Ptr b -> Int -> CDev -> IO () #

peek :: Ptr CDev -> IO CDev #

poke :: Ptr CDev -> CDev -> IO () #

Storable CIno 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CIno -> Int #

alignment :: CIno -> Int #

peekElemOff :: Ptr CIno -> Int -> IO CIno #

pokeElemOff :: Ptr CIno -> Int -> CIno -> IO () #

peekByteOff :: Ptr b -> Int -> IO CIno #

pokeByteOff :: Ptr b -> Int -> CIno -> IO () #

peek :: Ptr CIno -> IO CIno #

poke :: Ptr CIno -> CIno -> IO () #

Storable CMode 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CMode -> Int #

alignment :: CMode -> Int #

peekElemOff :: Ptr CMode -> Int -> IO CMode #

pokeElemOff :: Ptr CMode -> Int -> CMode -> IO () #

peekByteOff :: Ptr b -> Int -> IO CMode #

pokeByteOff :: Ptr b -> Int -> CMode -> IO () #

peek :: Ptr CMode -> IO CMode #

poke :: Ptr CMode -> CMode -> IO () #

Storable COff 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: COff -> Int #

alignment :: COff -> Int #

peekElemOff :: Ptr COff -> Int -> IO COff #

pokeElemOff :: Ptr COff -> Int -> COff -> IO () #

peekByteOff :: Ptr b -> Int -> IO COff #

pokeByteOff :: Ptr b -> Int -> COff -> IO () #

peek :: Ptr COff -> IO COff #

poke :: Ptr COff -> COff -> IO () #

Storable CPid 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CPid -> Int #

alignment :: CPid -> Int #

peekElemOff :: Ptr CPid -> Int -> IO CPid #

pokeElemOff :: Ptr CPid -> Int -> CPid -> IO () #

peekByteOff :: Ptr b -> Int -> IO CPid #

pokeByteOff :: Ptr b -> Int -> CPid -> IO () #

peek :: Ptr CPid -> IO CPid #

poke :: Ptr CPid -> CPid -> IO () #

Storable CSsize 
Instance details

Defined in System.Posix.Types

Storable CGid 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CGid -> Int #

alignment :: CGid -> Int #

peekElemOff :: Ptr CGid -> Int -> IO CGid #

pokeElemOff :: Ptr CGid -> Int -> CGid -> IO () #

peekByteOff :: Ptr b -> Int -> IO CGid #

pokeByteOff :: Ptr b -> Int -> CGid -> IO () #

peek :: Ptr CGid -> IO CGid #

poke :: Ptr CGid -> CGid -> IO () #

Storable CNlink 
Instance details

Defined in System.Posix.Types

Storable CUid 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CUid -> Int #

alignment :: CUid -> Int #

peekElemOff :: Ptr CUid -> Int -> IO CUid #

pokeElemOff :: Ptr CUid -> Int -> CUid -> IO () #

peekByteOff :: Ptr b -> Int -> IO CUid #

pokeByteOff :: Ptr b -> Int -> CUid -> IO () #

peek :: Ptr CUid -> IO CUid #

poke :: Ptr CUid -> CUid -> IO () #

Storable CCc 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CCc -> Int #

alignment :: CCc -> Int #

peekElemOff :: Ptr CCc -> Int -> IO CCc #

pokeElemOff :: Ptr CCc -> Int -> CCc -> IO () #

peekByteOff :: Ptr b -> Int -> IO CCc #

pokeByteOff :: Ptr b -> Int -> CCc -> IO () #

peek :: Ptr CCc -> IO CCc #

poke :: Ptr CCc -> CCc -> IO () #

Storable CSpeed 
Instance details

Defined in System.Posix.Types

Storable CTcflag 
Instance details

Defined in System.Posix.Types

Storable CRLim 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CRLim -> Int #

alignment :: CRLim -> Int #

peekElemOff :: Ptr CRLim -> Int -> IO CRLim #

pokeElemOff :: Ptr CRLim -> Int -> CRLim -> IO () #

peekByteOff :: Ptr b -> Int -> IO CRLim #

pokeByteOff :: Ptr b -> Int -> CRLim -> IO () #

peek :: Ptr CRLim -> IO CRLim #

poke :: Ptr CRLim -> CRLim -> IO () #

Storable CBlkSize 
Instance details

Defined in System.Posix.Types

Storable CBlkCnt 
Instance details

Defined in System.Posix.Types

Storable CClockId 
Instance details

Defined in System.Posix.Types

Storable CFsBlkCnt 
Instance details

Defined in System.Posix.Types

Storable CFsFilCnt 
Instance details

Defined in System.Posix.Types

Storable CId 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CId -> Int #

alignment :: CId -> Int #

peekElemOff :: Ptr CId -> Int -> IO CId #

pokeElemOff :: Ptr CId -> Int -> CId -> IO () #

peekByteOff :: Ptr b -> Int -> IO CId #

pokeByteOff :: Ptr b -> Int -> CId -> IO () #

peek :: Ptr CId -> IO CId #

poke :: Ptr CId -> CId -> IO () #

Storable CKey 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CKey -> Int #

alignment :: CKey -> Int #

peekElemOff :: Ptr CKey -> Int -> IO CKey #

pokeElemOff :: Ptr CKey -> Int -> CKey -> IO () #

peekByteOff :: Ptr b -> Int -> IO CKey #

pokeByteOff :: Ptr b -> Int -> CKey -> IO () #

peek :: Ptr CKey -> IO CKey #

poke :: Ptr CKey -> CKey -> IO () #

Storable CTimer 
Instance details

Defined in System.Posix.Types

Storable CSocklen 
Instance details

Defined in System.Posix.Types

Storable CNfds 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: CNfds -> Int #

alignment :: CNfds -> Int #

peekElemOff :: Ptr CNfds -> Int -> IO CNfds #

pokeElemOff :: Ptr CNfds -> Int -> CNfds -> IO () #

peekByteOff :: Ptr b -> Int -> IO CNfds #

pokeByteOff :: Ptr b -> Int -> CNfds -> IO () #

peek :: Ptr CNfds -> IO CNfds #

poke :: Ptr CNfds -> CNfds -> IO () #

Storable Fd 
Instance details

Defined in System.Posix.Types

Methods

sizeOf :: Fd -> Int #

alignment :: Fd -> Int #

peekElemOff :: Ptr Fd -> Int -> IO Fd #

pokeElemOff :: Ptr Fd -> Int -> Fd -> IO () #

peekByteOff :: Ptr b -> Int -> IO Fd #

pokeByteOff :: Ptr b -> Int -> Fd -> IO () #

peek :: Ptr Fd -> IO Fd #

poke :: Ptr Fd -> Fd -> IO () #

Storable CChar 
Instance details

Defined in Foreign.C.Types

Methods

sizeOf :: CChar -> Int #

alignment :: CChar -> Int #

peekElemOff :: Ptr CChar -> Int -> IO CChar #

pokeElemOff :: Ptr CChar -> Int -> CChar -> IO () #

peekByteOff :: Ptr b -> Int -> IO CChar #

pokeByteOff :: Ptr b -> Int -> CChar -> IO () #

peek :: Ptr CChar -> IO CChar #

poke :: Ptr CChar -> CChar -> IO () #

Storable CSChar 
Instance details

Defined in Foreign.C.Types

Storable CUChar 
Instance details

Defined in Foreign.C.Types

Storable CShort 
Instance details

Defined in Foreign.C.Types

Storable CUShort 
Instance details

Defined in Foreign.C.Types

Storable CInt 
Instance details

Defined in Foreign.C.Types

Methods

sizeOf :: CInt -> Int #

alignment :: CInt -> Int #

peekElemOff :: Ptr CInt -> Int -> IO CInt #

pokeElemOff :: Ptr CInt -> Int -> CInt -> IO () #

peekByteOff :: Ptr b -> Int -> IO CInt #

pokeByteOff :: Ptr b -> Int -> CInt -> IO () #

peek :: Ptr CInt -> IO CInt #

poke :: Ptr CInt -> CInt -> IO () #

Storable CUInt 
Instance details

Defined in Foreign.C.Types

Methods

sizeOf :: CUInt -> Int #

alignment :: CUInt -> Int #

peekElemOff :: Ptr CUInt -> Int -> IO CUInt #

pokeElemOff :: Ptr CUInt -> Int -> CUInt -> IO () #

peekByteOff :: Ptr b -> Int -> IO CUInt #

pokeByteOff :: Ptr b -> Int -> CUInt -> IO () #

peek :: Ptr CUInt -> IO CUInt #

poke :: Ptr CUInt -> CUInt -> IO () #

Storable CLong 
Instance details

Defined in Foreign.C.Types

Methods

sizeOf :: CLong -> Int #

alignment :: CLong -> Int #

peekElemOff :: Ptr CLong -> Int -> IO CLong #

pokeElemOff :: Ptr CLong -> Int -> CLong -> IO () #

peekByteOff :: Ptr b -> Int -> IO CLong #

pokeByteOff :: Ptr b -> Int -> CLong -> IO () #

peek :: Ptr CLong -> IO CLong #

poke :: Ptr CLong -> CLong -> IO () #

Storable CULong 
Instance details

Defined in Foreign.C.Types

Storable CLLong 
Instance details

Defined in Foreign.C.Types

Storable CULLong 
Instance details

Defined in Foreign.C.Types

Storable CBool 
Instance details

Defined in Foreign.C.Types

Methods

sizeOf :: CBool -> Int #

alignment :: CBool -> Int #

peekElemOff :: Ptr CBool -> Int -> IO CBool #

pokeElemOff :: Ptr CBool -> Int -> CBool -> IO () #

peekByteOff :: Ptr b -> Int -> IO CBool #

pokeByteOff :: Ptr b -> Int -> CBool -> IO () #

peek :: Ptr CBool -> IO CBool #

poke :: Ptr CBool -> CBool -> IO () #

Storable CFloat 
Instance details

Defined in Foreign.C.Types

Storable CDouble 
Instance details

Defined in Foreign.C.Types

Storable CPtrdiff 
Instance details

Defined in Foreign.C.Types

Storable CSize 
Instance details

Defined in Foreign.C.Types

Methods

sizeOf :: CSize -> Int #

alignment :: CSize -> Int #

peekElemOff :: Ptr CSize -> Int -> IO CSize #

pokeElemOff :: Ptr CSize -> Int -> CSize -> IO () #

peekByteOff :: Ptr b -> Int -> IO CSize #

pokeByteOff :: Ptr b -> Int -> CSize -> IO () #

peek :: Ptr CSize -> IO CSize #

poke :: Ptr CSize -> CSize -> IO () #

Storable CWchar 
Instance details

Defined in Foreign.C.Types

Storable CSigAtomic 
Instance details

Defined in Foreign.C.Types

Storable CClock 
Instance details

Defined in Foreign.C.Types

Storable CTime 
Instance details

Defined in Foreign.C.Types

Methods

sizeOf :: CTime -> Int #

alignment :: CTime -> Int #

peekElemOff :: Ptr CTime -> Int -> IO CTime #

pokeElemOff :: Ptr CTime -> Int -> CTime -> IO () #

peekByteOff :: Ptr b -> Int -> IO CTime #

pokeByteOff :: Ptr b -> Int -> CTime -> IO () #

peek :: Ptr CTime -> IO CTime #

poke :: Ptr CTime -> CTime -> IO () #

Storable CUSeconds 
Instance details

Defined in Foreign.C.Types

Storable CSUSeconds 
Instance details

Defined in Foreign.C.Types

Storable CIntPtr 
Instance details

Defined in Foreign.C.Types

Storable CUIntPtr 
Instance details

Defined in Foreign.C.Types

Storable CIntMax 
Instance details

Defined in Foreign.C.Types

Storable CUIntMax 
Instance details

Defined in Foreign.C.Types

Storable WordPtr 
Instance details

Defined in Foreign.Ptr

Storable IntPtr 
Instance details

Defined in Foreign.Ptr

Storable Fingerprint

Since: base-4.4.0.0

Instance details

Defined in Foreign.Storable

Storable CodePoint 
Instance details

Defined in Data.Text.Encoding

Methods

sizeOf :: CodePoint -> Int #

alignment :: CodePoint -> Int #

peekElemOff :: Ptr CodePoint -> Int -> IO CodePoint #

pokeElemOff :: Ptr CodePoint -> Int -> CodePoint -> IO () #

peekByteOff :: Ptr b -> Int -> IO CodePoint #

pokeByteOff :: Ptr b -> Int -> CodePoint -> IO () #

peek :: Ptr CodePoint -> IO CodePoint #

poke :: Ptr CodePoint -> CodePoint -> IO () #

Storable DecoderState 
Instance details

Defined in Data.Text.Encoding

Methods

sizeOf :: DecoderState -> Int #

alignment :: DecoderState -> Int #

peekElemOff :: Ptr DecoderState -> Int -> IO DecoderState #

pokeElemOff :: Ptr DecoderState -> Int -> DecoderState -> IO () #

peekByteOff :: Ptr b -> Int -> IO DecoderState #

pokeByteOff :: Ptr b -> Int -> DecoderState -> IO () #

peek :: Ptr DecoderState -> IO DecoderState #

poke :: Ptr DecoderState -> DecoderState -> IO () #

(Storable a, Integral a) => Storable (Ratio a)

Since: base-4.8.0.0

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Ratio a -> Int #

alignment :: Ratio a -> Int #

peekElemOff :: Ptr (Ratio a) -> Int -> IO (Ratio a) #

pokeElemOff :: Ptr (Ratio a) -> Int -> Ratio a -> IO () #

peekByteOff :: Ptr b -> Int -> IO (Ratio a) #

pokeByteOff :: Ptr b -> Int -> Ratio a -> IO () #

peek :: Ptr (Ratio a) -> IO (Ratio a) #

poke :: Ptr (Ratio a) -> Ratio a -> IO () #

Storable (StablePtr a)

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: StablePtr a -> Int #

alignment :: StablePtr a -> Int #

peekElemOff :: Ptr (StablePtr a) -> Int -> IO (StablePtr a) #

pokeElemOff :: Ptr (StablePtr a) -> Int -> StablePtr a -> IO () #

peekByteOff :: Ptr b -> Int -> IO (StablePtr a) #

pokeByteOff :: Ptr b -> Int -> StablePtr a -> IO () #

peek :: Ptr (StablePtr a) -> IO (StablePtr a) #

poke :: Ptr (StablePtr a) -> StablePtr a -> IO () #

Storable (Ptr a)

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: Ptr a -> Int #

alignment :: Ptr a -> Int #

peekElemOff :: Ptr (Ptr a) -> Int -> IO (Ptr a) #

pokeElemOff :: Ptr (Ptr a) -> Int -> Ptr a -> IO () #

peekByteOff :: Ptr b -> Int -> IO (Ptr a) #

pokeByteOff :: Ptr b -> Int -> Ptr a -> IO () #

peek :: Ptr (Ptr a) -> IO (Ptr a) #

poke :: Ptr (Ptr a) -> Ptr a -> IO () #

Storable (FunPtr a)

Since: base-2.1

Instance details

Defined in Foreign.Storable

Methods

sizeOf :: FunPtr a -> Int #

alignment :: FunPtr a -> Int #

peekElemOff :: Ptr (FunPtr a) -> Int -> IO (FunPtr a) #

pokeElemOff :: Ptr (FunPtr a) -> Int -> FunPtr a -> IO () #

peekByteOff :: Ptr b -> Int -> IO (FunPtr a) #

pokeByteOff :: Ptr b -> Int -> FunPtr a -> IO () #

peek :: Ptr (FunPtr a) -> IO (FunPtr a) #

poke :: Ptr (FunPtr a) -> FunPtr a -> IO () #

Storable a => Storable (Complex a)

Since: base-4.8.0.0

Instance details

Defined in Data.Complex

Methods

sizeOf :: Complex a -> Int #

alignment :: Complex a -> Int #

peekElemOff :: Ptr (Complex a) -> Int -> IO (Complex a) #

pokeElemOff :: Ptr (Complex a) -> Int -> Complex a -> IO () #

peekByteOff :: Ptr b -> Int -> IO (Complex a) #

pokeByteOff :: Ptr b -> Int -> Complex a -> IO () #

peek :: Ptr (Complex a) -> IO (Complex a) #

poke :: Ptr (Complex a) -> Complex a -> IO () #

Storable a => Storable (Identity a)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Identity

Methods

sizeOf :: Identity a -> Int #

alignment :: Identity a -> Int #

peekElemOff :: Ptr (Identity a) -> Int -> IO (Identity a) #

pokeElemOff :: Ptr (Identity a) -> Int -> Identity a -> IO () #

peekByteOff :: Ptr b -> Int -> IO (Identity a) #

pokeByteOff :: Ptr b -> Int -> Identity a -> IO () #

peek :: Ptr (Identity a) -> IO (Identity a) #

poke :: Ptr (Identity a) -> Identity a -> IO () #

Storable a => Storable (Down a)

Since: base-4.14.0.0

Instance details

Defined in Data.Ord

Methods

sizeOf :: Down a -> Int #

alignment :: Down a -> Int #

peekElemOff :: Ptr (Down a) -> Int -> IO (Down a) #

pokeElemOff :: Ptr (Down a) -> Int -> Down a -> IO () #

peekByteOff :: Ptr b -> Int -> IO (Down a) #

pokeByteOff :: Ptr b -> Int -> Down a -> IO () #

peek :: Ptr (Down a) -> IO (Down a) #

poke :: Ptr (Down a) -> Down a -> IO () #

Prim a => Storable (PrimStorable a) 
Instance details

Defined in Data.Primitive.Types

Storable a => Storable (Const a b)

Since: base-4.9.0.0

Instance details

Defined in Data.Functor.Const

Methods

sizeOf :: Const a b -> Int #

alignment :: Const a b -> Int #

peekElemOff :: Ptr (Const a b) -> Int -> IO (Const a b) #

pokeElemOff :: Ptr (Const a b) -> Int -> Const a b -> IO () #

peekByteOff :: Ptr b0 -> Int -> IO (Const a b) #

pokeByteOff :: Ptr b0 -> Int -> Const a b -> IO () #

peek :: Ptr (Const a b) -> IO (Const a b) #

poke :: Ptr (Const a b) -> Const a b -> IO () #

Accessors

Length information

length :: Storable a => Vector a -> Int #

O(1) Yield the length of the vector

null :: Storable a => Vector a -> Bool #

O(1) Test whether a vector is empty

Indexing

(!?) :: Storable a => Vector a -> Int -> Maybe a #

O(1) Safe indexing

Extracting subvectors

slice #

Arguments

:: Storable a 
=> Int

i starting index

-> Int

n length

-> Vector a 
-> Vector a 

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

take :: Storable a => Int -> Vector a -> Vector a #

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

drop :: Storable a => Int -> Vector a -> Vector a #

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 :: Storable a => Int -> Vector a -> (Vector a, Vector a) #

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 :: Storable a => Vector a #

O(1) Empty vector

singleton :: Storable a => a -> Vector a #

O(1) Vector with exactly one element

replicate :: Storable a => Int -> a -> Vector a #

O(n) Vector of the given length with the same value in each position

generate :: Storable a => Int -> (Int -> a) -> Vector a #

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

iterateN :: Storable a => Int -> (a -> a) -> a -> Vector a #

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

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

Examples

Expand
>>> import qualified Data.Vector.Storable as VS
>>> VS.iterateN 0 undefined undefined :: VS.Vector Int
[]
>>> VS.iterateN 26 succ 'a'
"abcdefghijklmnopqrstuvwxyz"

Since: vector-0.7.1

Monadic initialisation

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

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

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

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

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

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

For non-monadic version see iterateN

Since: vector-0.12.0.0

create :: Storable a => (forall s. ST s (MVector s a)) -> Vector a #

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, Storable a) => (forall s. ST s (f (MVector s a))) -> f (Vector a) #

Execute the monadic action and freeze the resulting vectors.

Unfolding

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

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 :: Storable a => Int -> (b -> Maybe (a, b)) -> b -> Vector a #

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, Storable a) => (b -> m (Maybe (a, b))) -> b -> m (Vector a) #

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, Storable a) => Int -> (b -> m (Maybe (a, b))) -> b -> m (Vector a) #

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 :: Storable a => Int -> (Vector a -> a) -> Vector a #

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 :: Storable a => Int -> (Vector a -> a) -> Vector a #

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 :: (Storable a, Num a) => a -> Int -> Vector a #

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 :: (Storable a, Num a) => a -> a -> Int -> Vector a #

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 0.1 5 = <1,1.1,1.2,1.3,1.4>

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

O(n) Enumerate values from x to y.

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

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

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

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

Concatenation

cons :: Storable a => a -> Vector a -> Vector a #

O(n) Prepend an element

snoc :: Storable a => Vector a -> a -> Vector a #

O(n) Append an element

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

O(m+n) Concatenate two vectors

concat :: Storable a => [Vector a] -> Vector a #

O(n) Concatenate all vectors in the list

Restricting memory usage

force :: Storable a => Vector a -> Vector a #

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 :: Storable a => Vector a -> Vector a #

O(n) Reverse a vector

Safe destructive update

modify :: Storable a => (forall s. MVector s a -> ST s ()) -> Vector a -> Vector a #

Apply a destructive operation to a vector. The operation will be performed in place if it is safe to do so and will modify a copy of the vector otherwise.

modify (\v -> write v 0 'x') (replicate 3 'a') = <'x','a','a'>

Elementwise operations

Mapping

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

O(n) Map a function over a vector

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

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

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

Map a function over a vector and concatenate the results.

Monadic mapping

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

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

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

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

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

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

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

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

Zipping

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

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

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

Zip three vectors with the given function.

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

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

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

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

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

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

Zip three vectors and their indices with the given function.

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

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

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

Monadic zipping

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

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

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

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

Working with predicates

Filtering

filter :: Storable a => (a -> Bool) -> Vector a -> Vector a #

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

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

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

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

O(n) Drop repeated adjacent elements.

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

O(n) Drop elements when predicate returns Nothing

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

O(n) Drop elements when predicate, applied to index and value, returns Nothing

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

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

takeWhile :: Storable a => (a -> Bool) -> Vector a -> Vector a #

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

dropWhile :: Storable a => (a -> Bool) -> Vector a -> Vector a #

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

Partitioning

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

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 :: Storable a => (a -> Bool) -> Vector a -> (Vector a, Vector a) #

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 :: Storable a => (a -> Bool) -> Vector a -> (Vector a, Vector a) #

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

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

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

Searching

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

O(n) Check if the vector contains an element

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

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

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

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

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

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

findIndices :: Storable a => (a -> Bool) -> Vector a -> Vector Int #

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

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

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

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

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

Folding

foldl :: Storable b => (a -> b -> a) -> a -> Vector b -> a #

O(n) Left fold

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

O(n) Left fold with strict accumulator

foldr :: Storable a => (a -> b -> b) -> b -> Vector a -> b #

O(n) Right fold

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

O(n) Right fold with a strict accumulator

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

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

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

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

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

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

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

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

Specialised folds

all :: Storable a => (a -> Bool) -> Vector a -> Bool #

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

Examples

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

any :: Storable a => (a -> Bool) -> Vector a -> Bool #

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

Examples

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

and :: Vector Bool -> Bool #

O(n) Check if all elements are True

Examples

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

or :: Vector Bool -> Bool #

O(n) Check if any element is True

Examples

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

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

O(n) Compute the sum of the elements

Examples

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

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

O(n) Compute the produce of the elements

Examples

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

Monadic folds

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

O(n) Monadic fold

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

O(n) Monadic fold with strict accumulator

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

O(n) Monadic fold that discards the result

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

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

Prefix sums (scans)

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

O(n) Prescan

prescanl f z = init . scanl f z

Example: prescanl (+) 0 <1,2,3,4> = <0,1,3,6>

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

O(n) Prescan with strict accumulator

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

O(n) Scan

postscanl f z = tail . scanl f z

Example: postscanl (+) 0 <1,2,3,4> = <1,3,6,10>

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

O(n) Scan with strict accumulator

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

O(n) Haskell-style scan

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

Example: scanl (+) 0 <1,2,3,4> = <0,1,3,6,10>

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

O(n) Haskell-style scan with strict accumulator

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

O(n) Right-to-left prescan

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

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

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

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

O(n) Right-to-left scan

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

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

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

O(n) Right-to-left Haskell-style scan

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

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

Conversions

Lists

toList :: Storable a => Vector a -> [a] #

O(n) Convert a vector to a list

fromList :: Storable a => [a] -> Vector a #

O(n) Convert a list to a vector

fromListN :: Storable a => Int -> [a] -> Vector a #

O(n) Convert the first n elements of a list to a vector

fromListN n xs = fromList (take n xs)

Examples

Expand
>>> import qualified Data.Vector.Storable as VS
>>> VS.fromListN 3 [1,2,3,4,5::Int]
[1,2,3]
>>> VS.fromListN 3 [1::Int]
[1]

Different vector types

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

O(n) Convert different vector types

Mutable vectors

freeze :: (Storable a, PrimMonad m) => MVector (PrimState m) a -> m (Vector a) #

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

thaw :: (Storable a, PrimMonad m) => Vector a -> m (MVector (PrimState m) a) #

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

copy :: (Storable a, PrimMonad m) => MVector (PrimState m) a -> Vector a -> m () #

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