getNumByValueDouble method

num? getNumByValueDouble(
  1. double? value,
  2. int fractionDigits
)

浮点数字保留x位小数

Implementation

num? getNumByValueDouble(double? value, int fractionDigits) {
  if (value == null) return null;
  String valueStr = value.toStringAsFixed(fractionDigits);
  return fractionDigits == 0 ? int.tryParse(valueStr) : double.tryParse(valueStr);
}