# contains(_:) Returns `true` if `other` is non-empty and contained within `self` by case-sensitive, non-literal search. Otherwise, returns `false`. ``` func contains(_ other: T) -> Bool where T : StringProtocol ``` ## Discussion Equivalent to `self.range(of: other) != nil` --- 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)