static S[] dropFirst(int n, S[] a) {
  return drop(n, a);
}

static S[] dropFirst(S[] a) {
  return drop(1, a);
}

static O[] dropFirst(O[] a) {
  return drop(1, a);
}

static <A> L<A> dropFirst(L<A> l) {
  return dropFirst(1, l);
}

static <A> L<A> dropFirst(int n, Iterable<A> i) { ret dropFirst(n, toList(i)); }
static <A> L<A> dropFirst(Iterable<A> i) { ret dropFirst(toList(i)); }

static <A> L<A> dropFirst(int n, L<A> l) {
  ret n <= 0 ? l : new ArrayList(l.subList(Math.min(n, l.size()), l.size()));
}

static <A> L<A> dropFirst(L<A> l, int n) {
  ret dropFirst(n, l);
}

static S dropFirst(int n, S s) { ret substring(s, n); }
static S dropFirst(S s, int n) { ret substring(s, n); }
static S dropFirst(S s) { ret substring(s, 1); }

ifclass Chain
static <A> Chain<A> dropFirst(Chain<A> c) {
  ret c?.next;
}
endif