# init(set:) Initializes a newly allocated set and adds to it objects from another given set. ``` convenience init(set: Set) ``` ## Parameters `set` A set containing objects to add to the receiving set. Each object is retained as it is added. ## Return Value An initialized objects set containing the objects from `set`. The returned set might be different than the original receiver. ## See Also [`- initWithObjects:`](/documentation/Foundation/NSSet/initWithObjects:) Initializes a newly allocated set with members taken from the specified list of objects. [`+ 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)