# ContiguousArray A contiguously stored array. ``` @frozen struct ContiguousArray ``` ## Overview The `ContiguousArray` type is a specialized array that always stores its elements in a contiguous region of memory. This contrasts with `Array`, which can store its elements in either a contiguous region of memory or an `NSArray` instance if its `Element` type is a class or `@objc` protocol. If your array’s `Element` type is a class or `@objc` protocol and you do not need to bridge the array to `NSArray` or pass the array to Objective-C APIs, using `ContiguousArray` may be more efficient and have more predictable performance than `Array`. If the array’s `Element` type is a struct or enumeration, `Array` and `ContiguousArray` should have similar efficiency. For more information about using arrays, see `Array` and `ArraySlice`, with which `ContiguousArray` shares most properties and methods. --- 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)