# init(set:) Returns a counted set object initialized with the contents of a given set. ``` convenience init(set: Set) ``` ## Parameters `set` An set of objects to add to the new set. ## Return Value An initialized counted set object with the contents of `set`. The returned object might be different than the original receiver. ## See Also [`- initWithSet:`](/documentation/Foundation/NSSet/init(set:)-1xovx) Initializes a newly allocated set and adds to it objects from another given set. [`+ setWithSet:`](/documentation/Foundation/NSSet/setWithSet:) Creates and returns a set containing the objects from another set. --- 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)