fromDMY static method
Implementation
static DateTime? fromDMY(String? dmy) {
if (dmy == null) return null;
final regex = RegExp(r'^(\d{2})\.(\d{2})\.(\d{4})$');
final match = regex.firstMatch(dmy);
if (match == null) return null;
final dayString = match.group(3);
if (dayString == null) return null;
final day = int.parse(dayString);
final monthString = match.group(3);
if (monthString == null) return null;
final month = int.parse(monthString);
final yearString = match.group(3);
if (yearString == null) return null;
final year = int.parse(yearString);
return DateTime(year, month, day);
}