vector-0.7.1: Efficient ArraysSource codeContentsIndex
Data.Vector.Primitive.Mutable
Portabilitynon-portable
Stabilityexperimental
MaintainerRoman Leshchinskiy <rl@cse.unsw.edu.au>
Contents
Mutable vectors of primitive types
Accessors
Length information
Extracting subvectors
Overlapping
Construction
Initialisation
Growing
Restricting memory usage
Accessing individual elements
Modifying vectors
Filling and copying
Deprecated operations
Description
Mutable primitive vectors.
Synopsis
data MVector s a = MVector !Int !Int !(MutableByteArray s)
type IOVector = MVector RealWorld
type STVector s = MVector s
class Prim a
length :: Prim a => MVector s a -> Int
null :: Prim a => MVector s a -> Bool
slice :: Prim a => Int -> Int -> MVector s a -> MVector s a
init :: Prim a => MVector s a -> MVector s a
tail :: Prim a => MVector s a -> MVector s a
take :: Prim a => Int -> MVector s a -> MVector s a
drop :: Prim a => Int -> MVector s a -> MVector s a
splitAt :: Prim a => Int -> MVector s a -> (MVector s a, MVector s a)
unsafeSlice :: Prim a => Int -> Int -> MVector s a -> MVector s a
unsafeInit :: Prim a => MVector s a -> MVector s a
unsafeTail :: Prim a => MVector s a -> MVector s a
unsafeTake :: Prim a => Int -> MVector s a -> MVector s a
unsafeDrop :: Prim a => Int -> MVector s a -> MVector s a
overlaps :: Prim a => MVector s a -> MVector s a -> Bool
new :: (PrimMonad m, Prim a) => Int -> m (MVector (PrimState m) a)
unsafeNew :: (PrimMonad m, Prim a) => Int -> m (MVector (PrimState m) a)
replicate :: (PrimMonad m, Prim a) => Int -> a -> m (MVector (PrimState m) a)
replicateM :: (PrimMonad m, Prim a) => Int -> m a -> m (MVector (PrimState m) a)
clone :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> m (MVector (PrimState m) a)
grow :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> m (MVector (PrimState m) a)
unsafeGrow :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> m (MVector (PrimState m) a)
clear :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> m ()
read :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> m a
write :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> a -> m ()
swap :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> Int -> m ()
unsafeRead :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> m a
unsafeWrite :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> a -> m ()
unsafeSwap :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> Int -> m ()
set :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> a -> m ()
copy :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> MVector (PrimState m) a -> m ()
move :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> MVector (PrimState m) a -> m ()
unsafeCopy :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> MVector (PrimState m) a -> m ()
unsafeMove :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> MVector (PrimState m) a -> m ()
newWith :: (PrimMonad m, Prim a) => Int -> a -> m (MVector (PrimState m) a)
unsafeNewWith :: (PrimMonad m, Prim a) => Int -> a -> m (MVector (PrimState m) a)
Mutable vectors of primitive types
data MVector s a Source
Mutable vectors of primitive types.
Constructors
MVector !Int !Int !(MutableByteArray s)
show/hide Instances
type IOVector = MVector RealWorldSource
type STVector s = MVector sSource
class Prim a Source
Class of types supporting primitive array operations
show/hide Instances
Accessors
Length information
length :: Prim a => MVector s a -> IntSource
Length of the mutable vector.
null :: Prim a => MVector s a -> BoolSource
Check whether the vector is empty
Extracting subvectors
slice :: Prim a => Int -> Int -> MVector s a -> MVector s aSource
Yield a part of the mutable vector without copying it.
init :: Prim a => MVector s a -> MVector s aSource
tail :: Prim a => MVector s a -> MVector s aSource
take :: Prim a => Int -> MVector s a -> MVector s aSource
drop :: Prim a => Int -> MVector s a -> MVector s aSource
splitAt :: Prim a => Int -> MVector s a -> (MVector s a, MVector s a)Source
unsafeSliceSource
:: Prim a
=> Intstarting index
-> Intlength of the slice
-> MVector s a
-> MVector s a
Yield a part of the mutable vector without copying it. No bounds checks are performed.
unsafeInit :: Prim a => MVector s a -> MVector s aSource
unsafeTail :: Prim a => MVector s a -> MVector s aSource
unsafeTake :: Prim a => Int -> MVector s a -> MVector s aSource
unsafeDrop :: Prim a => Int -> MVector s a -> MVector s aSource
Overlapping
overlaps :: Prim a => MVector s a -> MVector s a -> BoolSource
Construction
Initialisation
new :: (PrimMonad m, Prim a) => Int -> m (MVector (PrimState m) a)Source
Create a mutable vector of the given length.
unsafeNew :: (PrimMonad m, Prim a) => Int -> m (MVector (PrimState m) a)Source
Create a mutable vector of the given length. The length is not checked.
replicate :: (PrimMonad m, Prim a) => 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, Prim a) => 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, Prim a) => MVector (PrimState m) a -> m (MVector (PrimState m) a)Source
Create a copy of a mutable vector.
Growing
grow :: (PrimMonad m, Prim a) => 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.
unsafeGrow :: (PrimMonad m, Prim a) => 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 but this is not checked.
Restricting memory usage
clear :: (PrimMonad m, Prim a) => 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, Prim a) => MVector (PrimState m) a -> Int -> m aSource
Yield the element at the given position.
write :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> a -> m ()Source
Replace the element at the given position.
swap :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> Int -> m ()Source
Swap the elements at the given positions.
unsafeRead :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> m aSource
Yield the element at the given position. No bounds checks are performed.
unsafeWrite :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> a -> m ()Source
Replace the element at the given position. No bounds checks are performed.
unsafeSwap :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> Int -> Int -> m ()Source
Swap the elements at the given positions. No bounds checks are performed.
Modifying vectors
Filling and copying
set :: (PrimMonad m, Prim a) => MVector (PrimState m) a -> a -> m ()Source
Set all elements of the vector to the given value.
copy :: (PrimMonad m, Prim a) => 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, Prim a) => 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.

unsafeCopySource
:: (PrimMonad m, Prim a)
=> MVector (PrimState m) atarget
-> MVector (PrimState m) asource
-> m ()
Copy a vector. The two vectors must have the same length and may not overlap. This is not checked.
unsafeMoveSource
:: (PrimMonad m, Prim a)
=> MVector (PrimState m) atarget
-> MVector (PrimState m) asource
-> 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.

Deprecated operations
newWith :: (PrimMonad m, Prim a) => Int -> a -> m (MVector (PrimState m) a)Source
DEPRECATED Use replicate instead
unsafeNewWith :: (PrimMonad m, Prim a) => Int -> a -> m (MVector (PrimState m) a)Source
DEPRECATED Use replicate instead
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