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keys(+Tree, -KeyList)

Return all the keys from a tree.
Tree
A 2-3-4 tree
KeyList
A list of all the keys from Tree

Description

KeyList is a list of all the keys appearing in the tree Tree.

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

Fail Conditions

Never fails.

Resatisfiable

no

See Also

values / 2