MapIOnMapExtension<A1, A2> extension

on

• Map<A1, A2>

Methods

mapi<B1, B2, C>(MapEntry<B1, B2> mapper(A1 e1, A2 e2, int index, C? option), {List<C> options = const []}) → Map<B1, B2>

Available on Map<A1, A2>, provided by the MapIOnMapExtension extension

Maps a map with an index and an optional option.