# string(from:) Creates a formatted string for an array of items. ``` func string(from items: [Any]) -> String? ``` ## Parameters `items` An array of objects to format as a list. ## Return Value A formatted string representing the list of objects in an array. Returns `nil` if the formatter can’t generate a description for all objects in the array, or if `obj` is `nil`. ## Discussion The list formatter uses [`itemFormatter`](/documentation/Foundation/ListFormatter/itemFormatter) to format each item in the array. If [`itemFormatter`](/documentation/Foundation/ListFormatter/itemFormatter) doesn’t apply to a particular item, the list formatter falls back to the item’s [`description(withLocale:)`](/documentation/Foundation/NSArray/description(withLocale:)) or [`localizedDescription`](/documentation/Foundation/Progress/localizedDescription) if implemented. If those methods aren’t implemented, the formatter uses instead. --- 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)