Instance Method

remove(at:)

Removes and returns the element at the specified position.

Declaration

@discardableResult mutating func remove(at index: Int) -> Element

Parameters

index

The position of the element to remove. index must be a valid index of the array.

Return Value

The element at the specified index.

Discussion

All the elements following the specified position are moved up to close the gap.

var measurements: [Double] = [1.1, 1.5, 2.9, 1.2, 1.5, 1.3, 1.2]
let removed = measurements.remove(at: 2)
print(measurements)
// Prints "[1.1, 1.5, 1.2, 1.5, 1.3, 1.2]"

Complexity: O(n), where n is the length of the array.

Relationships

From Protocol

See Also

Removing Elements

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.

func popLast() -> Element?

Removes and returns the last element of the collection.