Returns the left branch of a given binary tree.
BinaryTree to be accessed
BinaryTree
const tree = make_tree(1, make_tree(2, make_empty_tree(), make_empty_tree()), make_empty_tree());display(entry(left_branch(tree))); // Shows "2" in the REPL Copy
const tree = make_tree(1, make_tree(2, make_empty_tree(), make_empty_tree()), make_empty_tree());display(entry(left_branch(tree))); // Shows "2" in the REPL
Returns the left branch of a given binary tree.