Instance Method


Returns the position immediately after the given index.



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



A valid index of the collection. i must be less than endIndex.

Return Value

The index value immediately after i.


The successor of an index must be well defined. For an index i into a collection c, calling c.index(after: i) returns the same index every time.

See Also

Manipulating Indices

var startIndex: Self.Index

The position of the first element in a nonempty collection.


var endIndex: Self.Index

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


var indices: Self.Indices

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

Required. Default implementation provided.

func formIndex(inout Self.Index, offsetBy: Int)

Offsets the given index by the specified distance.

func formIndex(inout 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.