[ library(m_tree234) | Reference Manual | Alphabetic Index ]

# count(+Tree, ?Count)

Count the number of elements in a tree.

Tree
  A 2-3-4 tree
Count
  The number of elements in Tree

## Description

Counts the number of elements in the tree Tree, and attempts to unify the result with Count.

This predicate should only be called with trees created by other predicates from the tree234 module.

### Fail Conditions

Fails if Count does not unify with the number of elements in Tree.

### Resatisfiable

no