Null operators, operators points may be combined and Null Null conditional operator
Null conditional operator?. It can be used in C # 6.0
Null coalescing operator ?? appears unclear which version in C #
Nullable type modifier
int? a;。
Null operators, operators points may be combined and Null Null conditional operator
Null conditional operator?. It can be used in C # 6.0
Null coalescing operator ?? appears unclear which version in C #
Nullable type modifier
int? a;。