
iter_init(+Tree, -Iter)

   Initialises an iterator for the given tree

Arguments
   Tree                A 2-3-4 tree
   Iter                A tree iterator (output)

Type
   library(m_tree234)

Description
	
	Initialises an iterator for the given tree.  The iterator can
        then be used with iter_next/4 to incrementally traverse the tree
        in order of ascending keys.
	
	
        The iterator for an empty tree is always the atom [].
	
	

See Also
   is_tree234 / 1, iter_next / 4
