Get the node's child at the given index, where zero represents the first
child.
This method is fairly fast, but its cost is technically log(child_index), so you
if you might be iterating over a long list of children, you should use
[Node::children] instead.
Get the node's child at the given index, where zero represents the first child.
This method is fairly fast, but its cost is technically log(child_index), so you if you might be iterating over a long list of children, you should use [Node::children] instead.