Instance MethodSwift

    formIndex(_:offsetBy:)

    Offsets the given index by the specified distance.

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

    Parameters

    i

    A valid index of the collection.

    distance

    The distance to offset i. distance must not be negative unless the collection conforms to the BidirectionalCollection protocol.

    Overview

    The value passed as distance must not offset i beyond the bounds of the collection.