Removes and returns the element at the specified position.
Required. Default implementation provided.
SDK
- Xcode 10.0+
Framework
- Swift Standard Library
Declaration
@discardableResult mutating func remove(at i: Self.Index) -> Self.Element
Parameters
iThe position of the element to remove.
indexmust be a valid index of the collection that is not equal to the collection’s end index.
Return Value
The removed element.
Discussion
All the elements following the specified position are moved to close the gap. This example removes the middle element from an array of measurements.
var measurements = [1.2, 1.5, 2.9, 1.2, 1.6]
let removed = measurements.remove(at: 2)
print(measurements)
// Prints "[1.2, 1.5, 1.2, 1.6]"
Calling this method may invalidate any existing indices for use with this collection.
Complexity: O(n), where n is the length of the collection.