Portability | non-portable |
---|---|

Stability | experimental |

Maintainer | Roman Leshchinskiy <rl@cse.unsw.edu.au> |

Safe Haskell | Trustworthy |

Safe interface to Data.Vector.Mutable

- data MVector s a
- type IOVector = MVector RealWorld
- type STVector s = MVector s
- length :: MVector s a -> Int
- null :: MVector s a -> Bool
- slice :: Int -> Int -> MVector s a -> MVector s a
- init :: MVector s a -> MVector s a
- tail :: MVector s a -> MVector s a
- take :: Int -> MVector s a -> MVector s a
- drop :: Int -> MVector s a -> MVector s a
- splitAt :: Int -> MVector s a -> (MVector s a, MVector s a)
- overlaps :: MVector s a -> MVector s a -> Bool
- new :: PrimMonad m => Int -> m (MVector (PrimState m) a)
- replicate :: PrimMonad m => Int -> a -> m (MVector (PrimState m) a)
- replicateM :: PrimMonad m => Int -> m a -> m (MVector (PrimState m) a)
- clone :: PrimMonad m => MVector (PrimState m) a -> m (MVector (PrimState m) a)
- grow :: PrimMonad m => MVector (PrimState m) a -> Int -> m (MVector (PrimState m) a)
- clear :: PrimMonad m => MVector (PrimState m) a -> m ()
- read :: PrimMonad m => MVector (PrimState m) a -> Int -> m a
- write :: PrimMonad m => MVector (PrimState m) a -> Int -> a -> m ()
- swap :: PrimMonad m => MVector (PrimState m) a -> Int -> Int -> m ()
- set :: PrimMonad m => MVector (PrimState m) a -> a -> m ()
- copy :: PrimMonad m => MVector (PrimState m) a -> MVector (PrimState m) a -> m ()
- move :: PrimMonad m => MVector (PrimState m) a -> MVector (PrimState m) a -> m ()

# Mutable boxed vectors

Mutable boxed vectors keyed on the monad they live in (`IO`

or

).
`ST`

s

# Accessors

## Length information

## Extracting subvectors

slice :: Int -> Int -> MVector s a -> MVector s aSource

Yield a part of the mutable vector without copying it.

## Overlapping

# Construction

## Initialisation

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

Create a mutable vector of the given length.

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

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

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

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 (PrimState m) a -> m (MVector (PrimState m) a)Source

Create a copy of a mutable vector.

## Growing

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

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

## Restricting memory usage

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

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 (PrimState m) a -> Int -> m aSource

Yield the element at the given position.

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

Replace the element at the given position.

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

Swap the elements at the given positions.

# Modifying vectors

## Filling and copying

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

Set all elements of the vector to the given value.

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

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

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

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.