firstDayOfYear static method
dynamic
firstDayOfYear([
- dynamic dia
Implementation
static firstDayOfYear([dynamic dia]) {
dia ??= DateTime.now();
if (dia.runtimeType.toString() == 'String') dia = DateTime.parse(dia);
DateTime date = dia;
return DateTime.utc(date.year, 1, 1).toIso8601String().substring(0, 10);
}