# withUnsafePointer(_:) Invokes the provided closure with the backing data and memory layout of this view. ``` func withUnsafePointer(_ body: (UnsafePointer, Span, Span) throws(E) -> R) throws(E) -> R where E : Error ``` ## Return Value The value returned by the closure. ## Discussion - body: The closure to be invoked with a pointer to the first element, as well as shape and strides of the view. > Note: This function is intended for situations where you may not be working with contiguous layouts, and as such cannot use `contiguousElements`. > You are responsible for reading the `strides` passed in when indexing the backing data. > If the view has an ``doc://com.apple.coreai/documentation/CoreAI/NDArray/View/interleaveLayout``, the strides for that dimension are block strides > and must be interpreted accordingly — see ``doc://com.apple.coreai/documentation/CoreAI/NDArray/InterleaveLayout-swift.struct``. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)