// f: A -> B
static <A, B> LinkedHashMap<A, B> listToMapWithValueFunction(Iterable<A> l, O f) {
  new LinkedHashMap<A, B> map;
  for (A a : unnull(l))
    map.put(a, (B) callF(f, a));
  ret map;
}

static <A, B> LinkedHashMap<A, B> listToMapWithValueFunction(O f, Iterable<A> l) {
  ret listToMapWithValueFunction(l, f);
}