# enumerateObjects(options:using:) Executes a given closure or block using each object in the array with the specified options. ``` func enumerateObjects(options opts: NSEnumerationOptions = [], using block: (Any, Int, UnsafeMutablePointer) -> Void) ``` ## Parameters `opts` The options for the enumeration. For possible values, see [`NSEnumerationOptions`](/documentation/Foundation/NSEnumerationOptions). `block` A closure or block to execute for each object in the array, taking three arguments: - The object. - The index of the object in the array. - A reference to a Boolean value, which the closure can set to in order to stop further enumeration of the array. If a closure stops further enumeration, that closure continues to run until it’s finished. When the [`concurrent`](/documentation/Foundation/NSEnumerationOptions/concurrent) enumeration option is specified, enumeration stops after all of the currently running closures finish. ## Discussion This method executes synchronously. By default, the enumeration starts with the first object and continues serially through the array to the last object. You can specify [`concurrent`](/documentation/Foundation/NSEnumerationOptions/concurrent) and/or [`reverse`](/documentation/Foundation/NSEnumerationOptions/reverse) as enumeration options to modify this behavior. ## See Also [`makeObjectsPerformSelector:`](/documentation/Foundation/NSArray/makeObjectsPerformSelector:) Sends to each object in the array the message identified by a given selector, starting with the first object and continuing through the array to the last object. [`makeObjectsPerformSelector:withObject:`](/documentation/Foundation/NSArray/makeObjectsPerformSelector:withObject:) Sends the `aSelector` message to each object in the array, starting with the first object and continuing through the array to the last object. --- 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)