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retract_all(+Head)

Removes from the database all clauses whose heads match Head

Head: Atom, variable or compound term.

This built-in predicate is obsolete!

Description

An obsolete synonym for retractall/1.

Modes and Determinism

retract_all(+) is det

Modules

This predicate is sensitive to its module context (tool predicate, see @/2).

Exceptions

(4) instantiation fault: Head is not instantiated
(5) type error: Head is not a callable term
(63) procedure not dynamic: Procedure is not dynamic
(70) accessing an undefined dynamic procedure: Procedure is undefined

See Also