ARTICLE: "set-operations" "Operations on sets"
"To test if an object is a member of a set:"
-{ $subsection member? }
+{ $subsections member? }
"All sets can be represented as a sequence, without duplicates, of their members:"
-{ $subsection members }
+{ $subsections members }
"Sets can have members added or removed destructively:"
{ $subsections
adjoin
set=
}
"An optional generic word for creating sets of the same class as a given set:"
-{ $subsection set-like }
+{ $subsections set-like }
"An optional generic word for creating a set with a fast lookup operation, if the set itself has a slow lookup operation:"
-{ $subsection fast-set }
+{ $subsections fast-set }
"For set types that allow duplicates, like sequence sets, some additional words test for duplication:"
{ $subsections
all-unique?