Reading and rereading a file with QXmlStreamReader

[talk2amulya]

In java, you could add "final" keyword so no one can derive from A, but in C++ there is no such keyword...I guess this is one of C++'s weakness...

if you keep a destructor of a class as private, most compilers would not let that class be subclassed..at least thats how Stroustrup intended it, some compilers seem to have ignored that..but all GNU compilers would not let you subclass a class with private destructor..so its no weakness of C++..anything that java can do, c++ can do it on one leg with high heels..with less memory consumption

[wysota]

anything that java can do, c++ can do it on one leg with high heels..with less memory consumption

Except for proper exception handling

[lni]

if you keep a destructor of a class as private, most compilers would not let that class be subclassed..at least thats how Stroustrup intended it, some compilers seem to have ignored that..but all GNU compilers would not let you subclass a class with private destructor..so its no weakness of C++..anything that java can do, c++ can do it on one leg with high heels..with less memory consumption

How do you delete the object if the dtor is private? You will have to provide a public "release" method to call when you want to delete it, and you won't be able to create an object on stack with private dtor...

For a class without virtual dtor, the object will have no vtable, you won't gain anything to use "IsA" relationship. I would use "hasA" relationship to be more intuitive and avoid possible memory leak. Again, C++ don't stop you from deriving from it....

[spam]

void QXmlStreamReader::setDevice(QIODevice * device)

void QXmlStreamReader::setDevice(QIODevice * device)

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Sets the current device to device. Setting the device resets the stream to its initial state.

See also device() and clear().

http://doc.qt.io/qt-4.8/qxmlstreamre...l#namespaceUri