# la_vector_slice(_:_:_:_:) ``` func la_vector_slice(_ vector: la_object_t, _ vector_first: la_index_t, _ vector_stride: la_index_t, _ slice_length: la_count_t) -> la_object_t ``` ## Parameters `vector` The vector to be sliced. `vector_first` The index of the source vector element that will become the first element of the new slice vector. `vector_stride` The offset in the source vector between elements that will be consecutive in the new slice vector. `slice_length` The length of the resulting slice vector. ## Return Value A new vector with length slice_length whose elements are taken from vector. ## Discussion\abstract Create a slice of a vector. \discussion The result object is the vector: [ vector[vector_first], vector[vector_first+vector_stride], … … , vector[vector_first + (slice_length-1)*vector_stride] ] Slices provide an efficient means to operate on subvectors and strides. These are lightweight objects that reference the storage of the vector from which they originate. Creating a vector slice does not require any allocation beyond the object representing the slice, nor does it require copying. This function supports slicing a vector, or a matrix that has only one row or only one column. If the object is not a matrix or vector, or if it is a matrix with both dimensions larger than one, the returned object will have status LA_INVALID_PARAMETER_ERROR. If the slice references indices that are less than zero or greater than or equal to the length of the vector, LA_SLICE_OUT_OF_BOUNDS_ERROR is returned. Always return a vector with the same orientation as the input. If input is vector_length x 1, output is vector_length x 1 and if input is 1 x vector_length, output is 1 x vector_length. --- 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)