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final specifier

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Flow control
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Types
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decltype specifier (C++11)
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typedef declaration
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Class-specific function properties
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virtuelle Funktion
Überschreibungsspezifizierer (C++11)
endgültigen Spezifizierer (C++11)
explizit (C++11)
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Special member functions
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Gibt an, dass ein virtuelle Funktion kann nicht in einer abgeleiteten Klasse oder eine Klasse kann nicht vererbt werden überschrieben
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Specifies that a virtuelle Funktion can not be overridden in a derived class or that a class cannot be inherited
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Inhaltsverzeichnis

[Bearbeiten] Syntax

function_declaration final ;
class class_name final base_classes

[Bearbeiten] Erklärung

Wenn in einer virtuellen Funktion Erklärung verwendet wird, gibt final, dass die Funktion kann nicht überschrieben werden von abgeleiteten Klassen .
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When used in a virtual function declaration, final specifies that the function may not be overridden by derived classes.
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final ist eine Kennung mit einer besonderen Bedeutung, wenn in einem Mitgliedstaat Funktion Erklärung oder Klasse Kopf verwendet. In anderen Zusammenhängen ist nicht reserviert und kann zu Namen Objekte und Funktionen verwendet werden .
Original:
final is an identifier with a special meaning when used in a member function declaration or class head. In other contexts it is not reserved and may be used to name objects and functions.
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[Bearbeiten] Beispiel

struct A
{
    virtual void foo() final;
};
 
struct B final : A
{
    void foo(); // Error: foo cannot be overridden as it's final in A
};
 
struct C : B // Error: B is final
{
};

[Bearbeiten] Siehe auch