int_string.dart

String intToString(int value) {
  final chars = <int>[];
  while (value > 0) {
    // 0x30 == ASCII '0'
    chars.add(0x30 + (value % 10));
    value ~/= 10;
  }
  return String.fromCharCodes(chars.reversed);
}

void main() {
  final n = 123456;

  print(intToString(n));

  print('$n');

  // this is same as print('$n');
  final _hiddenBuffer1 = StringBuffer();
  _hiddenBuffer1.write(n.toString());
  print(_hiddenBuffer1.toString());

  // this is same as print('$n') but less steps
  print(n.toString());

  print('value is $n pixels');

  final _hiddenBuffer2 = StringBuffer();
  _hiddenBuffer2.write('value is ');
  _hiddenBuffer2.write(n.toString());
  _hiddenBuffer2.write(' pixels');
  print(_hiddenBuffer2.toString());
}