Streamly.Data.MutArray.Generic

emptyOf count allocates a zero length array that can be extended to hold up to count items without reallocating.

Pre-release

createOf n folds a maximum of n elements from the input stream to an Array.

>>> createOf n = Fold.take n (MutArray.unsafeCreateOf n)

Pre-release

Fold the whole input to a single array.

Same as createWith using an initial array size of arrayChunkSize bytes rounded up to the element size.

Caution! Do not use this on infinite streams.

The array is mutated to append an additional element to it. If there is no reserved space available in the array then it is reallocated to double the original size.

This is useful to reduce allocations when appending unknown number of elements.

Note that the returned array may be a mutated version of the original array.

>>> snoc = MutArray.snocWith (* 2)

Performs O(n * log n) copies to grow, but is liberal with memory allocation.

Pre-release

O(1) Write the given element at the given index in the array. Performs in-place mutation of the array.

>>> putIndex ix arr val = MutArray.modifyIndex ix arr (const (val, ()))

Pre-release

Write the given element to the given index of the array. Does not check if the index is out of bounds of the array.

Pre-release

Modify a given index of an array using a modifier function.

Pre-release

Modify a given index of an array using a modifier function without checking the bounds.

Unsafe because it does not check the bounds of the array.

Pre-release

O(1) Lookup the element at the given index. Index starts from 0.

Return the element at the specified index without checking the bounds.

Unsafe because it does not check the bounds of the array.

Convert an Array into a list.

Pre-release

Generates a stream from the elements of a MutArray.

>>> read = Stream.unfold MutArray.reader

Unfold an array into a stream.