flatMapIndexedTo
@JvmName("flatMapIndexedIterableTo") inline fun <T, R, C : MutableCollection<in R>> Sequence<T>.flatMapIndexedTo(
destination: C,
transform: (index: Int, T) -> Iterable<R>
): C(source)
@JvmName("flatMapIndexedSequenceTo") inline fun <T, R, C : MutableCollection<in R>> Sequence<T>.flatMapIndexedTo(
destination: C,
transform: (index: Int, T) -> Sequence<R>
): C(source)
Appends all elements yielded from results of transform function being invoked on each element and its index in the original sequence, to the given destination.
The operation is terminal.