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C++ identifier with special meaning: `final` (since C++11)

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Identifiers with special meaning

final

(C++11)

(C++20)

(C++20)

(C++11)

(C++26)

(C++26)

replaceable_if_eligible

(C++26)

trivially_relocatable_if_eligible

(C++26)

[edit] Usage

final specifier

[edit] Example

struct b0 final {};
struct d0 : b0 {}; // Error: cannot derive from final base
 
struct b1
{
 virtual void f0() final;
 virtual void f1();
};
 
struct d1 : b1 // OK
{
 void f0(); // Error: cannot override final function
 void f1(); // OK
};

[edit] See also

class, struct, union
virtual, override
replaceable_if_eligible (since C++26), trivially_relocatable_if_eligible (since C++26)

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