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What is wrong with below python inheritance code?
Post 303020571 by disedorgue on Monday 23rd of July 2018 11:14:48 AM
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whats the use of inheriting with access specifier as private..?
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Hi,
In multi-level inheritance:
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void fun() { cout << "A" << endl; }
};
class B : public A {
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};
class C : public B { };
int main() {
C c;
c.fun(); // Ans: A
} (1 Reply)
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LEARN ABOUT CENTOS
qmetaobject
QMetaObject(3qt) QMetaObject(3qt) NAME
QMetaObject - Meta information about Qt objects SYNOPSIS
#include <qmetaobject.h> Public Members const char * className () const const char * superClassName () const QMetaObject * superClass () const bool inherits ( const char * clname ) const int numSlots ( bool super = FALSE ) const int numSignals ( bool super = FALSE ) const QStrList slotNames ( bool super = FALSE ) const QStrList signalNames ( bool super = FALSE ) const int numClassInfo ( bool super = FALSE ) const const QClassInfo * classInfo ( int index, bool super = FALSE ) const const char * classInfo ( const char * name, bool super = FALSE ) const const QMetaProperty * property ( int index, bool super = FALSE ) const int findProperty ( const char * name, bool super = FALSE ) const QStrList propertyNames ( bool super = FALSE ) const int numProperties ( bool super = FALSE ) const DESCRIPTION
The QMetaObject class contains meta information about Qt objects. The Meta Object System in Qt is responsible for the signals and slots inter-object communication mechanism, runtime type information and the property system. All meta information in Qt is kept in a single instance of QMetaObject per class. This class is not normally required for application programming. But if you write meta applications, such as scripting engines or GUI builders, you might find these functions useful: className() to get the name of a class. superClassName() to get the name of the superclass. inherits(), the function called by QObject::inherits(). superClass() to access the superclass's meta object. numSlots(), numSignals(), slotNames(), and signalNames() to get information about a class's signals and slots. property() and propertyNames() to obtain information about a class's properties. Classes may have a list of name-value pairs of class information. The number of pairs is returned by numClassInfo(), and values are returned by classInfo(). See also moc (Meta Object Compiler) and Object Model. MEMBER FUNCTION DOCUMENTATION
const QClassInfo * QMetaObject::classInfo ( int index, bool super = FALSE ) const Returns the class information with index index or 0 if no such information exists. If super is TRUE, inherited class information is included. const char * QMetaObject::classInfo ( const char * name, bool super = FALSE ) const This is an overloaded member function, provided for convenience. It behaves essentially like the above function. Returns the class information with name name or 0 if no such information exists. If super is TRUE, inherited class information is included. const char * QMetaObject::className () const Returns the class name. See also QObject::className() and superClassName(). int QMetaObject::findProperty ( const char * name, bool super = FALSE ) const Returns the index for the property with name name or -1 if no such property exists. If super is TRUE, inherited properties are included. See also property() and propertyNames(). bool QMetaObject::inherits ( const char * clname ) const Returns TRUE if this class inherits clname within the meta object inheritance chain; otherwise returns FALSE. (A class is considered to inherit itself.) int QMetaObject::numClassInfo ( bool super = FALSE ) const Returns the number of items of class information available for this class. If super is TRUE, inherited class information is included. int QMetaObject::numProperties ( bool super = FALSE ) const Returns the number of properties for this class. If super is TRUE, inherited properties are included. See also propertyNames(). int QMetaObject::numSignals ( bool super = FALSE ) const Returns the number of signals for this class. If super is TRUE, inherited signals are included. See also signalNames(). int QMetaObject::numSlots ( bool super = FALSE ) const Returns the number of slots for this class. If super is TRUE, inherited slots are included. See also slotNames(). const QMetaProperty * QMetaObject::property ( int index, bool super = FALSE ) const Returns the property meta data for the property at index index or 0 if no such property exists. If super is TRUE, inherited properties are included. See also propertyNames(). QStrList QMetaObject::propertyNames ( bool super = FALSE ) const Returns a list with the names of all this class's properties. If super is TRUE, inherited properties are included. See also property(). QStrList QMetaObject::signalNames ( bool super = FALSE ) const Returns a list with the names of all this class's signals. If super is TRUE, inherited signals are included. QStrList QMetaObject::slotNames ( bool super = FALSE ) const Returns a list with the names of all this class's slots. If super is TRUE, inherited slots are included. See also numSlots(). QMetaObject * QMetaObject::superClass () const Returns the meta object of the super class or 0 if there is no such object. const char * QMetaObject::superClassName () const Returns the class name of the superclass or 0 if there is no superclass in the QObject hierachy. See also className(). SEE ALSO
http://doc.trolltech.com/qmetaobject.html http://www.trolltech.com/faq/tech.html COPYRIGHT
Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com. See the license file included in the distribution for a complete license statement. AUTHOR
Generated automatically from the source code. BUGS
If you find a bug in Qt, please report it as described in http://doc.trolltech.com/bughowto.html. Good bug reports help us to help you. Thank you. The definitive Qt documentation is provided in HTML format; it is located at $QTDIR/doc/html and can be read using Qt Assistant or with a web browser. This man page is provided as a convenience for those users who prefer man pages, although this format is not officially supported by Trolltech. If you find errors in this manual page, please report them to qt-bugs@trolltech.com. Please include the name of the manual page (qmetaobject.3qt) and the Qt version (3.3.8). Trolltech AS 2 February 2007 QMetaObject(3qt)