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final specifier

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C++
 
C++言語
一般的なトピック
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General topics
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フロー制御
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Flow control
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条件付き実行文
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Conditional execution statements
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繰り返し文
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Iteration statements
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文をジャンプします
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Jump statements
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機能します
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Functions
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関数の宣言
ラムダ関数の宣言
関数テンプレート
の歴史。インライン指定
例外仕様 (廃止予定)
noexcept指定子 (C++11)
例外
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Exceptions
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名前空間
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Namespaces
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タイプ
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Types
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decltype specifier (C++11)
指定子
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Specifiers
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CV指定
貯蔵期間指定
constexprの指定子 (C++11)
自動指定 (C++11)
alignas指定子 (C++11)
初期化
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Initialization
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リテラル
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Literals
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式
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Expressions
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代替表現
ユーティリティ
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Utilities
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タイプ
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Types
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typedef declaration
型の別名宣言 (C++11)
属性 (C++11)
キャストします
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Casts
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暗黙の型変換
const_cast conversion
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Memory allocation
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クラス
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Classes
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クラス固有の機能特性
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Class-specific function properties
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明示 (C++11)
静的
特殊なメンバ関数
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Special member functions
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テンプレート
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Templates
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クラステンプレート
関数テンプレート
テンプレートの特殊化
パラメーターパック (C++11)
その他
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Miscellaneous
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インラインアセンブリ
 
仮想関数は、派生クラス内またはクラスは継承できませんそのオーバーライドできないことを指定します
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Specifies that a 仮想関数 can not be overridden in a derived class or that a class cannot be inherited
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目次

[編集] 構文

function_declaration final ;
class class_name final base_classes
This section is incomplete
Reason: function_declaration is probably wrong terminology

[編集] 説明

仮想関数の宣言で使用する場合は、finalは、関数が派生クラスによってオーバーライドされないかもしれないことを指定します.
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メンバ関数宣言またはクラスの頭の中で使用される特殊な意味を持つ識別子です。他の文脈では予約されていないと名前のオブジェクトおよび関数に使用されるかもしれません.
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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[編集] 例

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
{
};

[編集] 参照

「http://ja.cppreference.com/mwiki/index.php?title=cpp/language/final&oldid=29537」から取得