| Gets the term stored in an inner blackboard.
bb_get(+Board, +OuterKey, ?InnerKey, ?Term)
bb_get/4 retrieves a key/value tuple from an inner blackboard.
OuterKey has to be a ground term!
This predicate is equivalent to:
bb_get(Board, OuterKey, SubBoard), bb_get(SubBoard, InnerKey, Term)
Arguments
Board blackboard
OuterKey ground term
InnerKey ground term
Term term
Examples
bb_create(Family),
bb_put(Family, john, father, joe),
bb_put(Family, john, mother, clara),
bb_put(Family, emily, father, mike),
bb_get(Family, john, Parent, Name)
->
Parent = father
Name = joe
and
Parent = mother
Name = clara
Standard
This predicate is not part of the ISO-Prolog Standard.
See also
bb_clear/1,
bb_clear_2/2,
bb_create/1,
bb_contains/2,
bb_contains_key/2,
bb_get/3,
bb_get_4/4,
bb_put/3,
bb_put_4/4,
bb_remove/2.
bb_keys/2.
bb_elements/2.
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