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C++:MemberFunctions

Special member functions

Special member functions are the only functions that can be defaulted, that is, defined using = default instead of the function body (see their pages for details) 

struct AmRequestEvent
{
    int32_t id   = 0;
    int32_t type = 0;

    std::vector<AmPoint> points;
    std::vector<int32_t> extras;

    AmRequestEvent() = default;
    AmRequestEvent(AmRequestEvent const & obj) = default;
    AmRequestEvent(AmRequestEvent && obj) = default;
    AmRequestEvent & operator =(AmRequestEvent const & obj) = default;
    AmRequestEvent & operator =(AmRequestEvent && obj) = default;
};

Default constructor

Copy constructor

Move constructor (since C++11)

Copy assignment operator

Move assignment operator (since C++11)

Destructor

Troubleshooting

request for member '..' in '..' which is of non-class type 

Foo foo2();

change to 

Foo foo2;

You get the error because compiler thinks of 

Foo foo2()

as of function declaration with name 'foo2' and the return type 'Foo'.

See also

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