Instance Property

endIndex

The collection’s “past the end” position—that is, the position one greater than the last valid subscript argument.

Required.

Declaration

var endIndex: Self.Index { get }

Discussion

When you need a range that includes the last element of a collection, use the half-open range operator (..<) with endIndex. The ..< operator creates a range that doesn’t include the upper bound, so it’s always safe to use with endIndex. For example:

let numbers = [10, 20, 30, 40, 50]
if let index = numbers.firstIndex(of: 30) {
    print(numbers[index ..< numbers.endIndex])
}
// Prints "[30, 40, 50]"

If the collection is empty, endIndex is equal to startIndex.

See Also

Manipulating Indices

var startIndex: Self.Index

The position of the first element in a nonempty collection.

Required.

var indices: Self.Indices

The indices that are valid for subscripting the collection, in ascending order.

Required. Default implementation provided.

func index(after: Self.Index) -> Self.Index

Returns the position immediately after the given index.

Required.

func formIndex(Self.Index, offsetBy: Int)

Offsets the given index by the specified distance.

func formIndex(Self.Index, offsetBy: Int, limitedBy: Self.Index) -> Bool

Offsets the given index by the specified distance, or so that it equals the given limiting index.