resources in resource-managing classes.(Effective C++)

APIs often require access to raw resources, so each RAII class should offer a way to get at the resource it manages.

Access may be via explicit conversion or implicit conversion. In general, explicit conversion is safer, but implicit conversion is more convenient for clients.

1#include<iostream>

2usingnamespacestd;

3

4classBase

5{

6public:

7voidtest()

8{

9cout<<"inside base"<<endl;

10}

11};

12

13classDerived

14{

15private:

16Basebase;

17public:

18Baseget()const

19{

20returnbase;

21}

22operatorBase()const

23{

24returnbase;

25}

26};

27

28intmain()

29{

30Derived d;

31d.get().test();

32Base b=(Base)d;

33b.test();

34cin.get();

35return0;

36}

原文链接: https://www.cnblogs.com/zhtf2014/archive/2011/03/23/1993071.html

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