Contents

init(buffer:initializedCount:)

Unsafely create an OutputSpan over partly-initialized memory.

Declaration

init(buffer: borrowing Slice<UnsafeMutableBufferPointer<Element>>, initializedCount: Int)

Parameters

  • buffer:

    An UnsafeMutableBufferPointer to be initialized

  • initializedCount:

    The number of initialized elements at the beginning of buffer.

Discussion

The memory in buffer must remain valid throughout the lifetime of the newly-created OutputSpan. Its prefix must contain initializedCount initialized instances, followed by uninitialized memory. The default value of initializedCount is 0, representing the common case of a completely uninitialized buffer.