DART

add years to date dart

DateTime now = new DateTime.now();
DateTime tenYearsLater = DateTime(now.year + 10, now.month, now.day);

dart date add month

var date = DateTime.now();
var newDate = DateTime(date.year, date.month - 1, date.day);

dart datetime end of month

var date = new DateTime(2013,3,0);
print(date.day);  // 28 for February