retractall/1

Description

retractall(Head)

Logtalk adds this built-in predicate, with the usual definition, to a Prolog compiler if it is not already defined.

Template and modes

retractall(+callable)

Errors

Head is not a callable term:

type_error(callable, Head)

Examples

| ?- retractall(foo(_)).

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Last updated on: September 6, 2002