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Why is a pure virtual function initialized by 0?

... The reason =0 is used is that Bjarne Stroustrup didn't think he could get another keyword, such as "pure" past the C++ community at the time the feature was being implemented. This is described in his book, The Design & Evolution of ...
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jQuery check if an input is type checkbox?

... answered Sep 28 '09 at 18:49 Ken BrowningKen Browning 26.5k66 gold badges5252 silver badges6666 bronze badges ...
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C++ auto keyword. Why is it magic?

...r templates on any compiler that even sort of attempted to implement C++98/03. As such, adding support for auto was apparently fairly easy for essentially all the compiler teams--it was added quite quickly, and there seem to have been few bugs related to it either. When this answer was originally w...
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Why does running the Flask dev server run itself twice?

...o away, but then you also lose the reloading functionality: app.run(port=4004, debug=config.DEBUG, host='0.0.0.0', use_reloader=False) You can disable the reloader when using the flask run command too: FLASK_DEBUG=1 flask run --no-reload You can look for the WERKZEUG_RUN_MAIN environment varia...
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How add “or” in switch statements?

... | edited May 11 '09 at 14:56 answered May 11 '09 at 14:51 ...
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Correct way to quit a Qt program?

...CoreApplication::quit() it "tells the application to exit with return code 0 (success).". If you want to exit because you discovered file corruption then you may not want to exit with return code zero which means success, so you should call QCoreApplication::exit() because you can provide a non-zero...
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Getting thread id of current method call

... 230 NSLog(@"%@", [NSThread currentThread]); ...
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In Python, how do you convert a `datetime` object to seconds?

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What does !important mean in CSS?

... | edited May 5 '16 at 23:03 ovgolovin 11.7k44 gold badges3434 silver badges7575 bronze badges answered ...
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How to find the size of an array in postgresql

... Adam DingleAdam Dingle 1,54211 gold badge1010 silver badges99 bronze badges 10 ...