# intersect(_:) Removes from the receiving hash table each element that isn’t a member of another given hash table. ``` func intersect(_ other: NSHashTable) ``` ## Parameters `other` The hash table with which to perform the intersection. ## Discussion The equality test used for members depends on the personality option selected. For instance, choosing the [`objectPersonality`](/documentation/Foundation/NSPointerFunctions/Options/objectPersonality) option will use `isEqual:` to determine equality. See [`NSPointerFunctions.Options`](/documentation/Foundation/NSPointerFunctions/Options) for more information on personality options and their corresponding equality tests. --- 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)