Instance MethodSwift


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

    func formIndex(_ i: inout Self.Index, offsetBy distance: Int, limitedBy limit: Self.Index) -> Bool



    A valid index of the collection.


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


    A valid index of the collection to use as a limit. If distance > 0, a limit that is less than i has no effect. Likewise, if distance < 0, a limit that is greater than i has no effect.


    true if i has been offset by exactly distance steps without going beyond limit; otherwise, false. When the return value is false, the value of i is equal to limit.


    The value passed as distance must not offset i beyond the bounds of the collection, unless the index passed as limit prevents offsetting beyond those bounds.