struct S

{

  int[] i;

  ref opIndex(size_t index) => i[index];

  auto opSliceAssign/*

  auto opIndexAssign//*/

  (int value) => i[] = value; 

}

​

void main()

{

  auto s = S([1, 2]);

  s[] = 2;

  assert(s.i == [2, 2]);

  s[1] = 42;

  assert(s.i == [2, 42]);

}