Mutable boxed vectors keyed on the monad they live in (IO or ST s).

Length of the mutable vector.

Check whether the vector is empty

Yield a part of the mutable vector without copying it. The vector must contain at least i+n elements.

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

Check whether two vectors overlap.

Create a mutable vector of the given length.

Create a mutable vector of the given length. The vector elements are set to bottom so accessing them will cause an exception.

Since: 0.5

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

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.

Create a copy of a mutable vector.

Grow a boxed vector by the given number of elements. The number must be non-negative. Same semantics as in grow for generic vector. It differs from grow functions for unpacked vectors, however, in that only pointers to values are copied over, therefore values themselves will be shared between two vectors. This is an important distinction to know about during memory usage analysis and in case when values themselves are of a mutable type, eg. IORef or another mutable vector.

Examples

>>> import qualified Data.Vector as V
>>> import qualified Data.Vector.Mutable as MV
>>> mv <- V.thaw $ V.fromList ([10, 20, 30] :: [Integer])
>>> mv' <- MV.grow mv 2

>>> MV.write mv' 3 999
>>> MV.write mv' 4 777
>>> V.unsafeFreeze mv'
[10,20,30,999,777]

>>> MV.write mv' 2 888
>>> V.unsafeFreeze mv'
[10,20,888,999,777]
>>> V.unsafeFreeze mv
[10,20,30]

Since: 0.5

Grow a vector by the given number of elements. The number must be non-negative but this is not checked. Same semantics as in unsafeGrow for generic vector.

Since: 0.5

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

Yield the element at the given position.

Replace the element at the given position.

Modify the element at the given position.

Swap the elements at the given positions.

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

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

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

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

Compute the next (lexicographically) permutation of given vector in-place. Returns False when input is the last permutation

Set all elements of the vector to the given value.

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

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.

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

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.

O(n) Make a copy of a mutable array to a new mutable vector.

Since: 0.12.2.0

O(n) Make a copy of a mutable vector into a new mutable array.

Since: 0.12.2.0