Removes and returns the last element of the collection.
SDKs
- iOS 7.0+
- macOS 10.9+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
- Xcode 10.0+
Framework
- Foundation
Declaration
mutating func popLast() -> UInt8?
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)