# Span `Span` represents a contiguous region of memory which contains initialized instances of `Element`. ``` @frozen struct Span where Element : ~Copyable ``` ## Overview A `Span` instance is a non-owning, non-escaping view into memory. When a `Span` is created, it inherits the lifetime of the container owning the contiguous memory, ensuring temporal safety and avoiding use-after-free errors. Operations on `Span` are bounds-checked, ensuring spatial safety and avoiding buffer overflow errors. ## Relationships ### Conforms To [`SendableMetatype`](/documentation/Swift/SendableMetatype) [`ContiguousBytes`](/documentation/Foundation/ContiguousBytes) [`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable) [`Sendable`](/documentation/Swift/Sendable) [`Iterable`](/documentation/Swift/Iterable) --- 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)