# isIdentical(to:) Returns a Boolean value indicating whether two instances refer to the same memory region. ``` func isIdentical(to other: Span) -> Bool ``` ## Parameters `other` A span to compare with this one. ## Return Value Whether `self` and `other` reference the same region in memory. ## Discussion Two spans are identical if they reference the same starting address and have the same number of elements. > Complexity: O(1) --- 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)