????????????????????????
????????????????????????????????create???????????
??????????????????tuple?????8??????????????8?????????????????8????????????????8?????????8????????????tuple??????????????
??????????????????????????????????????
//2  member ??the second type is the nest type tuple.
Tuple<int?? Tuple<int>> test4 = new Tuple<int?? Tuple<int>>(1?? new Tuple<int>(2));
//10 member datatype. nest the 8 parameter type.
Tuple<int?? int?? int?? int?? int?? int?? int?? Tuple<int?? int?? int>> test5 = new Tuple<int?? int?? int?? int?? int?? int?? int?? Tuple<int?? int?? int>>(1?? 2?? 3?? 4?? 5?? 6?? 7?? new Tuple<int?? int?? int>(8?? 9?? 10));
//
Console.WriteLine(test4.Item1 + test4.Item2.Item1);
Console.WriteLine(test5.Item1 + test5.Item2 + test5.Item3 + test5.Item4 + test5.Item5 + test5.Item6 + test5.Item7 + test5.Rest.Item1 + test5.Rest.Item2 + test5.Rest.Item3);