// A = S or Snippet
static <A> L<A> snippetsWithTitles(L<A> l) {
  ifclass Snippet
    if (first(ids) instanceof Snippet)
      ret map snippetWithTitle_cached((L<Snippet>) l);
  endif
  L<S> ids = cast l;
  final SS map = getSnippetTitles_cached(ids);
  ret map(func(S id) { fsI(id) + " - " + map.get(fsI(id)) }, ids);
}

static S snippetsWithTitles(S... ids) {
  ret join(", ", snippetsWithTitles(asList(ids)));
}