---
title: "removeAll(where:)"
framework: swift
role: symbol
role_heading: Instance Method
path: "swift/array/removeall(where:)-6bd6r"
---

# removeAll(where:)

Removes all the elements that satisfy the given predicate.

## Declaration

```swift
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

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] note: O(n), where n is the length of the collection.