append(contentsOf:)

Adds the elements of a sequence or collection to the end of this collection.

Declaration

mutating func append<S>(contentsOf newElements: S) where S : Sequence, Self.Element == S.Element

The collection being appended to allocates any additional necessary storage to hold the new elements.

The following example appends the elements of a Range<Int> instance to an array of integers:

var numbers = [1, 2, 3, 4, 5]
numbers.append(contentsOf: 10...15)
print(numbers)
// Prints "[1, 2, 3, 4, 5, 10, 11, 12, 13, 14, 15]"