A detailed train tickets, air ticket booking system, with a very good reference value.
一个详细的火车票、飞机票订票系统，具有很好的参考价值。
Unlike with reference types, you cannot derive a new type from a value type.
不同于参考型别，您无法从实值型别衍生新型别。
Unlike with reference types, you cannot derive a new type from a value type.
不同于参考型别，您无法从实值型别衍生新型别。
应用推荐