Function Flatten

iterator.go:399–405

Flatten returns an Iterator adapter that flattens nested iterators.

(it Iterator[Iterator[T]])

// Flatten returns an Iterator adapter that flattens nested iterators.
func Flatten[T any](it Iterator[Iterator[T]]) Iterator[T] {
	return &flattenIter[T]{
		inner:   it,
		current: Empty[T](),
		done:    false,
	}
}

func (it *flattenIter[T]) Next() Option[T] {
	for {