< > BotCompany Repo | #1008209 // followBackwardRelation

JavaX fragment (include)

static Set<Lisp> followBackwardRelation(S relation, S argument) {
  ret followBackwardRelation(relation, lisp(argument));
}

static Set<Lisp> followBackwardRelation(S relation, Lisp argument) {
  new HashSet<Lisp> out;
  for (Lisp l : lispTruthByHead(relation))
    if (eq(l.get(1), argument))
      out.add(l.get(0));
  ret out;
}

Author comment

Began life as a copy of #1007941

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