# slice(at:) Returns a sub-view with the same rank as this view by slicing the dimensions at the provided ranges. ``` @export(implementation) consuming func slice(at ranges: [any NDArray.RangeExpression]) -> NDArray.MutableView ``` ## Parameters `ranges` The range expressions describing where to slice along each dimension. `ranges.count` must be ≤ `rank`. Unspecified trailing dimensions are assumed to be `.all`. ## Discussion For example if you have a 3D NDArray and want to increment a specific region, you can slice that region and then access a span over it (or use `withUnsafeMutablePointer` if not contiguous). ```swift /// Updates the desired channel and range of rows func incrementRegion( of mutableView: consuming NDArray.MutableView, channel: Int, startRow: Int, endRow: Int ) { var region = mutableView.slice(at: [channel, startRow.. Note: If you need to avoid `consuming` the view which this is called on, you can use ``doc://com.apple.coreai/documentation/CoreAI/NDArray/MutableView/mutatingSlice(at:)-9pmi4``. --- 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)