getWeekDay function
Implementation
String getWeekDay(DateTime date) {
int num = date.weekday;
switch (num) {
case 1:
return '月';
case 2:
return '火';
case 3:
return '水';
case 4:
return '木';
case 5:
return '金';
case 6:
return '土';
case 7:
return '日';
default:
return '';
}
}