Instance Method

popLast()

Removes and returns the last element of the collection.

Declaration

mutating func popLast() -> Element?

Return Value

The last element of the collection if the collection is not empty; otherwise, nil.

Discussion

Calling this method may invalidate all saved indices of this collection. Do not rely on a previously stored index value after altering a collection with any operation that can change its length.

Complexity: O(1)

See Also

Removing Elements

func remove(at: Int) -> Element

Removes and returns the element at the specified position.

func removeFirst() -> Element

Removes and returns the first element of the collection.

func removeFirst(Int)

Removes the specified number of elements from the beginning of the collection.

func removeLast() -> Element

Removes and returns the last element of the collection.

func removeLast(Int)

Removes the specified number of elements from the end of the collection.

func removeSubrange(Range<Int>)

Removes the elements in the specified subrange from the collection.

func removeSubrange<R>(R)

Removes the elements in the specified subrange from the collection.

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

Removes all the elements that satisfy the given predicate.

func removeAll(keepingCapacity: Bool)

Removes all elements from the array.