addWorkdays method
Adds n working days (Mon–Fri) to this date.
DateTime(2024, 1, 5).addWorkdays(3) // 2024-01-10 (skips weekend)
Implementation
DateTime addWorkdays(int n) {
var result = this;
var remaining = n.abs();
final direction = n >= 0 ? 1 : -1;
while (remaining > 0) {
result = result.add(Duration(days: direction));
if (result.isWeekday) remaining--;
}
return result;
}