# dictionaryWithObjects:forKeys: Creates a dictionary containing entries constructed from the contents of an array of keys and an array of values. ``` + (instancetype) dictionaryWithObjects:(NSArray *) objects forKeys:(NSArray> *) keys; ``` ## Parameters `objects` An array containing the values for the new dictionary. `keys` An array containing the keys for the new dictionary. Each key is copied (using [`copy(with:)`](/documentation/Foundation/NSCopying/copy(with:)); keys must conform to the `NSCopying` protocol), and the copy is added to the dictionary. ## Return Value A new dictionary containing entries constructed from the contents of `objects` and `keys`. ## Discussion This method steps through the `objects` and `keys` arrays, creating entries in the new dictionary as it goes. An `NSInvalidArgumentException` is raised if objects and keys don’t have the same number of elements. --- 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)