# subscript(_:) Accesses a contiguous subrange of the buffer’s elements. ``` subscript(bounds: Range) -> Slice> { get nonmutating set } ``` ## Parameters `bounds` A range of the buffer’s indices. The bounds of the range must be valid indices of the buffer. ## Overview The accessed slice uses the same indices for the same elements as the original buffer uses. Always use the slice’s `startIndex` property instead of assuming that its indices start at a particular value. This example demonstrates getting a slice from a buffer of strings, finding the index of one of the strings in the slice, and then using that index in the original buffer. ``` var streets = ["Adams", "Bryant", "Channing", "Douglas", "Evarts"] streets.withUnsafeMutableBufferPointer { buffer in let streetSlice = buffer[2.. Note: Bounds checks for `bounds` are performed only in debug mode. --- 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)