static O[] arrayrep(O a, int n) {
  O[] array = new[n];
  for i to n: array[i] = a;
  ret array;
}

static <A> A[] nuLike arrayrep(Class<A> type, A a, int n) {
  A[] array = newArray(type, n);
  for i to n: array[i] = a;
  ret array;
}