formatDoubleComma3 static method
每隔 3 三位加逗号 num 数字或数字字符串。double型。
Implementation
static String formatDoubleComma3(Object num, {int digit = 3, String pattern = ','}) {
final parts = num.toString().split('.');
final left = formatDigitPatternEnd(parts[0], digit: digit, pattern: pattern);
final right = parts.length > 1 ? parts[1] : '';
return '$left.$right';
}