dart punched cards

top-left.dart

// Top left print
  String top_left_plus = "..";

  for (int i = 0; i < cols - 1 ; i ++) {
    top_left_plus += "+-";
  }
  top_left_plus += "+";
  
  print(top_left_plus);

  String top_left_bars = "..";

  for (int i = 0; i < cols - 1 ; i ++) {
    top_left_bars += "|.";
  }
  top_left_bars += "|";
  
  print(top_left_bars);
 // End of top left print