subtractDecString method

Decimal? subtractDecString(
  1. String a,
  2. String b
)

减

Implementation

Decimal? subtractDecString(String a, String b) {
  final aDecimal = _safeParseDecimal(a);
  final bDecimal = _safeParseDecimal(b);
  if (aDecimal == null || bDecimal == null) return null;
  return aDecimal - bDecimal;
}