Espaços nominais
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Acções

final specifier

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C++
 
Linguagem C++
Tópicos gerais
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General topics
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Controle de fluxo
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Flow control
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Declarações execução condicional
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Conditional execution statements
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Instruções de iteração
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Iteration statements
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Ir declarações
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Jump statements
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Funções
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Functions
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declaração da função
lambda declaração da função
modelo de função
linha especificador
especificações de exceção (obsoleta)
noexcept especificador (C++11)
Exceções
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Exceptions
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Namespaces
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Namespaces
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Tipos
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Types
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decltype specifier (C++11)
Especificadores
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Specifiers
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cv especificadores
armazenamento duração especificadores
constexpr especificador (C++11)
auto especificador (C++11)
alignas especificador (C++11)
Inicialização
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Initialization
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Literais
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Literals
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Expressões
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Expressions
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representações alternativas
Utilitários
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Utilities
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Tipos
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Types
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typedef declaration
tipo de alias declaração (C++11)
atributos (C++11)
Conversões
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Casts
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conversões implícitas
const_cast conversion
static_cast conversion
dynamic_cast conversion
reinterpret_cast conversion
Elenco C-estilo e funcional
Alocação de memória
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Memory allocation
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Classes
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Classes
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Classe propriedades específicas de função
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Class-specific function properties
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função virtual
substituir especificador (C++11)
final de especificador (C++11)
Funções membro especiais
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Special member functions
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Modelos
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Templates
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modelo de classe
modelo de função
especialização de modelo
pacotes de parâmetros (C++11)
Diversos
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Miscellaneous
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Assembly embutido
 
Especifica que uma função virtual não pode ser substituído em uma classe derivada ou que uma classe não pode ser herdada
Original:
Specifies that a função virtual can not be overridden in a derived class or that a class cannot be inherited
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Índice

[editar] Sintaxe

function_declaration final ;
class class_name final base_classes
Esta seção está incompleta
Motivo: function_declaration is probably wrong terminology

[editar] Explicação

Quando usado em uma declaração de função virtual, final especifica que a função não pode ser substituído por classes derivadas.
Original:
When used in a virtual function declaration, final specifies that the function may not be overridden by derived classes.
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final é um identificador com um significado especial quando usado em uma declaração de função membro ou chefe de classe. Noutros contextos, não é reservada e pode ser utilizado para objectos de nomes e funções.
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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[editar] Exemplo

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
{
};

[editar] Veja também

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