Method ADT.Relation.Binary()->filter()

Method filter

ADT.Relation.Binary(< LeftType, RightType >) filter(function(LeftType, RightType:mixed) f)

Description

Filters the entries in the relation, and returns a relation with all those entries for which the filtering function f returned true. The function f gets two arguments: the left and the right value for every entry in the relation.

See also

filter_destructively()