
lookup(+Tree, ++Key, ?Value)

   Search a tree for a key.

Arguments
   Tree                A 2-3-4 tree
   Key                 A key to search for
   Value               The value corresponding to Key

Type
   library(m_tree234)

Description
	
	This predicate searches the tree Tree for an entry with key Key.
	If the key is found, then it attempts to unify the corresponding
	value with Value.  If the key is not found, then it aborts with
	a runtime error.
	
	
	This predicate should only be called with trees created by other
	predicates from the tree234 module.
	
	

Fail Conditions
   Fails if Value does not unify with the value corresponding to Key.

Resatisfiable
   no

See Also
   member / 3, search / 3
