reduceIndexedMaybe

inline fun <E : R, R> KoneIterator<E>.reduceIndexedMaybe(operation: (index: UInt, acc: R, E) -> R): Maybe<R>(source)

inline fun <E : R, R> KoneIterable<E>.reduceIndexedMaybe(operation: (index: UInt, acc: R, E) -> R): Maybe<R>(source)