Instance Method

removeAll(where:)

Removes all the elements that satisfy the given predicate.

Declaration

mutating func removeAll(where shouldBeRemoved: (Self.Element) throws -> Bool) rethrows
Available when Self conforms to MutableCollection.

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.

See Also

RangeReplaceableCollection Implementations

func removeAll(where: (Self.Element) -> Bool)

Removes all the elements that satisfy the given predicate.