Removes and returns the last element of the collection.
@discardableResult mutating func removeLast() -> Self.Element where Self:BidirectionalCollectionThe last element of the collection.
The collection must not be empty.
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.
import Swiftprotocol RangeReplaceableCollection<Element> : Collection where Self.SubSequence : RangeReplaceableCollectionA collection that supports replacement of an arbitrary subrange of elements with the elements of another collection.
associatedtype Element where Self.Element == Self.Iterator.ElementA type representing the sequence’s elements.
protocol BidirectionalCollection<Element> : Collection where Self.Indices : BidirectionalCollection, Self.SubSequence : BidirectionalCollectionA collection that supports backward as well as forward traversal.
mutating func popLast() -> Self.Element? Removes and returns the last element of the collection.
mutating func removeLast(_ k: Int) Removes the specified number of elements from the end of the collection.