daysInMonth property

int get daysInMonth

Implementation

int get daysInMonth => (month == DateTime.february)
    ? (year % 4 == 0) && (year % 100 != 0) || (year % 400 == 0)
        ? 29
        : 28
    : <int>[31, -1, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31][month - 1];