parse static method

num? parse(
  1. String valueStr, {
  2. int? fractionDigits,
})

解析字符串为数字(支持保留小数位数)

Implementation

static num? parse(String valueStr, {int? fractionDigits}) {
  final value = double.tryParse(valueStr);
  return fractionDigits == null
      ? value
      : round(value, fractionDigits);
}