toCommaString method

String toCommaString({
  1. String comma = ',',
})

Implementation

String toCommaString({String comma = ','}) {
  final String str = toString();
  int i = 0;
  String ret = '';
  for (final String c in str.characters.reversed) {
    if (i == 3) {
      ret = '$c$comma$ret';
      i = 1;
    } else {
      ret = '$c$ret';
      i += 1;
    }
  }
  return ret;
}