const Date = packed struct {
    year: i32,
    month: u8,
    day: u8,
    hour: u8,
    minute: u8,
    nanosecond: u64,
    timezone: [3]u8 = "UTC",

    fn parse(input: []const u8, comptime format: []const u8) Date {
        return Date{
            .year = 2018,
            .month = 3,
            .day = 5,
            .hour = 0,
            .minute = 0,
            .nanosecond = 0,
        };
    }
};

test "parsing" {
    const input = "2018-03-05 00:00:00";
    const date = Date.parse(input, "YYYY-MM-DD hh:mm:ss");
}