Data.Vector.Generic.Mutable

Generic interface to mutable vectors

Class of mutable vector types

class MVector v a where

Class of mutable vectors parametrised with a primitive state token.

Minimum complete implementation:

• basicLength
• basicUnsafeSlice
• basicOverlaps
• basicUnsafeNew
• basicUnsafeRead
• basicUnsafeWrite

Minimal complete definition

basicLength, basicUnsafeSlice, basicOverlaps, basicUnsafeNew, basicUnsafeRead, basicUnsafeWrite

Methods

basicLength :: v s a -> Int

Length of the mutable vector. This method should not be called directly, use length instead.

basicUnsafeSlice

Arguments

:: Int

starting index

-> Int

length of the slice

-> v s a

-> v s a

Yield a part of the mutable vector without copying it. This method should not be called directly, use unsafeSlice instead.

basicOverlaps :: v s a -> v s a -> Bool

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

Create a mutable vector of the given length. This method should not be called directly, use unsafeNew instead.

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

Create a mutable vector of the given length and fill it with an initial value. This method should not be called directly, use replicate instead.

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

Yield the element at the given position. This method should not be called directly, use unsafeRead instead.

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

Replace the element at the given position. This method should not be called directly, use unsafeWrite instead.

basicClear :: PrimMonad m => v (PrimState m) a -> m ()

Reset all elements of the vector to some undefined value, clearing all references to external objects. This is usually a noop for unboxed vectors. This method should not be called directly, use clear instead.

basicSet :: PrimMonad m => v (PrimState m) a -> a -> m ()

Set all elements of the vector to the given value. This method should not be called directly, use set instead.

basicUnsafeCopy

Arguments

:: PrimMonad m

=> v (PrimState m) a

target

-> v (PrimState m) a

source

-> m ()

Copy a vector. The two vectors may not overlap. This method should not be called directly, use unsafeCopy instead.

basicUnsafeMove

Arguments

:: PrimMonad m

=> v (PrimState m) a

target

-> v (PrimState m) a

source

-> m ()

Move the contents of a vector. The two vectors may overlap. This method should not be called directly, use unsafeMove instead.

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

Grow a vector by the given number of elements. This method should not be called directly, use unsafeGrow instead.

Instances

Prim a => MVector MVector a

Storable a => MVector MVector a

MVector MVector Bool

MVector MVector Char

MVector MVector Double

MVector MVector Float

MVector MVector Int

MVector MVector Int8

MVector MVector Int16

MVector MVector Int32

MVector MVector Int64

MVector MVector Word

MVector MVector Word8

MVector MVector Word16

MVector MVector Word32

MVector MVector Word64

MVector MVector ()

MVector MVector a

(RealFloat a, Unbox a) => MVector MVector (Complex a)

(Unbox a, Unbox b) => MVector MVector (a, b)

(Unbox a, Unbox b, Unbox c) => MVector MVector (a, b, c)

(Unbox a, Unbox b, Unbox c, Unbox d) => MVector MVector (a, b, c, d)

(Unbox a, Unbox b, Unbox c, Unbox d, Unbox e) => MVector MVector (a, b, c, d, e)

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

Accessors

Length information

length :: MVector v a => v s a -> Int

Length of the mutable vector.

null :: MVector v a => v s a -> Bool

Check whether the vector is empty

Extracting subvectors

slice :: MVector v a => Int -> Int -> v s a -> v s a

Yield a part of the mutable vector without copying it.

init :: MVector v a => v s a -> v s a

tail :: MVector v a => v s a -> v s a

take :: MVector v a => Int -> v s a -> v s a

drop :: MVector v a => Int -> v s a -> v s a

splitAt :: MVector v a => Int -> v s a -> (v s a, v s a)

unsafeSlice

Arguments

:: MVector v a

=> Int

starting index

-> Int

length of the slice

-> v s a

-> v s a

Yield a part of the mutable vector without copying it. No bounds checks are performed.

unsafeInit :: MVector v a => v s a -> v s a

unsafeTail :: MVector v a => v s a -> v s a

unsafeTake :: MVector v a => Int -> v s a -> v s a

unsafeDrop :: MVector v a => Int -> v s a -> v s a

Overlapping

overlaps :: MVector v a => v s a -> v s a -> Bool

Construction

Initialisation

new :: (PrimMonad m, MVector v a) => Int -> m (v (PrimState m) a)

Create a mutable vector of the given length.

unsafeNew :: (PrimMonad m, MVector v a) => Int -> m (v (PrimState m) a)

Create a mutable vector of the given length. The length is not checked.

replicate :: (PrimMonad m, MVector v a) => Int -> a -> m (v (PrimState m) a)

Create a mutable vector of the given length (0 if the length is negative) and fill it with an initial value.

replicateM :: (PrimMonad m, MVector v a) => Int -> m a -> m (v (PrimState m) a)

Create a mutable vector of the given length (0 if the length is negative) and fill it with values produced by repeatedly executing the monadic action.

clone :: (PrimMonad m, MVector v a) => v (PrimState m) a -> m (v (PrimState m) a)

Create a copy of a mutable vector.

Growing

grow :: (PrimMonad m, MVector v a) => v (PrimState m) a -> Int -> m (v (PrimState m) a)

Grow a vector by the given number of elements. The number must be positive.

unsafeGrow :: (PrimMonad m, MVector v a) => v (PrimState m) a -> Int -> m (v (PrimState m) a)

Grow a vector by the given number of elements. The number must be positive but this is not checked.

Restricting memory usage

clear :: (PrimMonad m, MVector v a) => v (PrimState m) a -> m ()

Reset all elements of the vector to some undefined value, clearing all references to external objects. This is usually a noop for unboxed vectors.

Accessing individual elements

read :: (PrimMonad m, MVector v a) => v (PrimState m) a -> Int -> m a

Yield the element at the given position.

write :: (PrimMonad m, MVector v a) => v (PrimState m) a -> Int -> a -> m ()

Replace the element at the given position.

swap :: (PrimMonad m, MVector v a) => v (PrimState m) a -> Int -> Int -> m ()

Swap the elements at the given positions.

unsafeRead :: (PrimMonad m, MVector v a) => v (PrimState m) a -> Int -> m a

Yield the element at the given position. No bounds checks are performed.

unsafeWrite :: (PrimMonad m, MVector v a) => v (PrimState m) a -> Int -> a -> m ()

Replace the element at the given position. No bounds checks are performed.

unsafeSwap :: (PrimMonad m, MVector v a) => v (PrimState m) a -> Int -> Int -> m ()

Swap the elements at the given positions. No bounds checks are performed.

Modifying vectors

Filling and copying

set :: (PrimMonad m, MVector v a) => v (PrimState m) a -> a -> m ()

Set all elements of the vector to the given value.

copy :: (PrimMonad m, MVector v a) => v (PrimState m) a -> v (PrimState m) a -> m ()

Copy a vector. The two vectors must have the same length and may not overlap.

move :: (PrimMonad m, MVector v a) => v (PrimState m) a -> v (PrimState m) a -> m ()

Move the contents of a vector. The two vectors must have the same length.

If the vectors do not overlap, then this is equivalent to copy. Otherwise, the copying is performed as if the source vector were copied to a temporary vector and then the temporary vector was copied to the target vector.

unsafeCopy

Arguments

:: (PrimMonad m, MVector v a)

=> v (PrimState m) a

target

-> v (PrimState m) a

source

-> m ()

Copy a vector. The two vectors must have the same length and may not overlap. This is not checked.

unsafeMove

Arguments

:: (PrimMonad m, MVector v a)

=> v (PrimState m) a

target

-> v (PrimState m) a

source

-> m ()

Move the contents of a vector. The two vectors must have the same length, but this is not checked.

If the vectors do not overlap, then this is equivalent to unsafeCopy. Otherwise, the copying is performed as if the source vector were copied to a temporary vector and then the temporary vector was copied to the target vector.

Internal operations

mstream :: (PrimMonad m, MVector v a) => v (PrimState m) a -> MStream m a

mstreamR :: (PrimMonad m, MVector v a) => v (PrimState m) a -> MStream m a

unstream :: (PrimMonad m, MVector v a) => Stream a -> m (v (PrimState m) a)

Create a new mutable vector and fill it with elements from the Stream. The vector will grow exponentially if the maximum size of the Stream is unknown.

unstreamR :: (PrimMonad m, MVector v a) => Stream a -> m (v (PrimState m) a)

Create a new mutable vector and fill it with elements from the Stream from right to left. The vector will grow exponentially if the maximum size of the Stream is unknown.

munstream :: (PrimMonad m, MVector v a) => MStream m a -> m (v (PrimState m) a)

Create a new mutable vector and fill it with elements from the monadic stream. The vector will grow exponentially if the maximum size of the stream is unknown.

munstreamR :: (PrimMonad m, MVector v a) => MStream m a -> m (v (PrimState m) a)

Create a new mutable vector and fill it with elements from the monadic stream from right to left. The vector will grow exponentially if the maximum size of the stream is unknown.

transform :: (PrimMonad m, MVector v a) => (MStream m a -> MStream m a) -> v (PrimState m) a -> m (v (PrimState m) a)

transformR :: (PrimMonad m, MVector v a) => (MStream m a -> MStream m a) -> v (PrimState m) a -> m (v (PrimState m) a)

fill :: (PrimMonad m, MVector v a) => v (PrimState m) a -> MStream m a -> m (v (PrimState m) a)

fillR :: (PrimMonad m, MVector v a) => v (PrimState m) a -> MStream m a -> m (v (PrimState m) a)

unsafeAccum :: (PrimMonad m, MVector v a) => (a -> b -> a) -> v (PrimState m) a -> Stream (Int, b) -> m ()

accum :: (PrimMonad m, MVector v a) => (a -> b -> a) -> v (PrimState m) a -> Stream (Int, b) -> m ()

unsafeUpdate :: (PrimMonad m, MVector v a) => v (PrimState m) a -> Stream (Int, a) -> m ()

update :: (PrimMonad m, MVector v a) => v (PrimState m) a -> Stream (Int, a) -> m ()

reverse :: (PrimMonad m, MVector v a) => v (PrimState m) a -> m ()

unstablePartition :: forall m v a. (PrimMonad m, MVector v a) => (a -> Bool) -> v (PrimState m) a -> m Int

unstablePartitionStream :: (PrimMonad m, MVector v a) => (a -> Bool) -> Stream a -> m (v (PrimState m) a, v (PrimState m) a)

partitionStream :: (PrimMonad m, MVector v a) => (a -> Bool) -> Stream a -> m (v (PrimState m) a, v (PrimState m) a)