CPP-object-model - Related information

• Why does the following CPP code output yy1 instead of yx1? Why is the result different from directly adjusting z-> xx ()?

  -sharpinclude <iostream> using namespace std; class a { public: void virtual x() { cout << "x" << endl; } void xx() { cout << "x1" << endl; } }; class b :public a { public:...

  Inherit overload-function cPP-object-model cPP

  Mar.07,2021
• CPP escapes json string

  A json string variable is { "a": 1, "b": 2 } wants to escape as the json string { "a ": 1, "b ", 2}. is a variable, so there is no way to use R "() ". The json library uses jsoncpp is there any good way? ...

  CPP-object-model cPP11 json

  Feb.28,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-248d388-19d1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-248d388-19d1.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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