# AtomicLazyReference A lazily initializable atomic strong reference. ``` @frozen struct AtomicLazyReference where Instance : AnyObject ``` ## Overview These values can be set (initialized) exactly once, but read many times. ## Relationships ### Conforms To [`Sendable`](/documentation/Swift/Sendable) [`SendableMetatype`](/documentation/Swift/SendableMetatype) --- 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)