subset [Relation]
Purpose
The subset relation tests whether a set is a subset of another set.
Syntax
subset set1 set2
Domain
The set1 argument is a list of objects.
Range
The set2 argument is a list of objects.
Examples
(ask (subset '(3 4) '(3 5 4))) ==> T
(tellm (:about Fred (:filled-by friends Joe Sue))
(:about Mary (:filled-by friends Sue Joe Pam)))
(ask (subset (friends Fred) (friends Mary))) ==> T
See Also
Last modified: Jun 1 1995