# removeAll(where:) Removes all the elements that satisfy the given predicate. ``` mutating func removeAll(where shouldBeRemoved: (Self.Element) throws -> Bool) rethrows ``` ## Parameters `shouldBeRemoved` A closure that takes an element of the sequence as its argument and returns a Boolean value indicating whether the element should be removed from the collection. ## Discussion Use this method to remove every element in a collection that meets particular criteria. The order of the remaining elements is preserved. This example removes all the odd values from an array of numbers: ``` var numbers = [5, 6, 7, 8, 9, 10, 11] numbers.removeAll(where: { $0 % 2 != 0 }) // numbers == [6, 8, 10] ``` > Complexity: O(*n*), where *n* is the length of the collection. --- 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)