RectGrid.opApply

1 auto myGrid = rectGrid([
2   [ 00, 01, 02, 03, 04 ],
3   [ 10, 11, 12, 13, 14 ],
4   [ 20, 21, 22, 23, 24 ],
5 ]);
6 
7 foreach(coord, tile ; myGrid) {
8   assert(tile == coord.row * 10 + coord.col);
9 }