// functions: L<F1>
static L<Map> map_multi_asMaps(Collection functions, Iterable c) {
  new L<Map> out;
  fOr (O a : c) {
    new Map row;
    fOr (O f : functions)
      row.put(f, callF(f, a));
    out.add(row);
  }
  ret out;
}