Method First

immutable.go:1451–1462

First resets the iterator to the first key/value pair.

()

// First resets the iterator to the first key/value pair.
func (itr *MapIterator[K, V]) First() {
	// Exit immediately if the map is empty.
	if itr.m.root == nil {
		itr.depth = -1
		return
	}

	// Initialize the stack to the left most element.
	itr.stack[0] = mapIteratorElem[K, V]{node: itr.m.root}
	itr.depth = 0
	itr.first()
}

// Next returns the next key/value pair. Returns a nil key when no elements remain.
func (itr *MapIterator[K, V]) Next() (key K, value V, ok bool) {