datetime function
Get the date string from DateTime.now(). '20240307112422357516'
Implementation
String datetime() {
final now = DateTime.now();
return '${now.year}${now.month.toString().padLeft(2, '0')}${now.day.toString().padLeft(2, '0')}${now.hour.toString().padLeft(2, '0')}${now.minute.toString().padLeft(2, '0')}${now.second.toString().padLeft(2, '0')}${now.millisecond.toString().padLeft(3, '0')}${now.microsecond.toString().padLeft(3, '0')}';
}