svoid test_structure_multiDimensionalIntArrays() {
  int[] a = new { 3, 10, -5 };
  
  assertEqualsVerbose("intarray{3, 10, -5}", struct(a));
  assertEqualsVerbose(ll(3, 10, -5), toList(restruct(a)));
  
  int[] b = new { 4 };
  int[][] c = { a, b };
  
  assertEqualsVerbose("intarray/2{intarray{3, 10, -5}, intarray{4}}", struct(c));
  int[][] c2 = restruct(c); // check the actual type
  assertEqualsVerbose(ll(ll(3, 10, -5), ll(4)), lmap toList(toList(c2)));
}