std::is_bind_expression

 

C++

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コンセプト

ユーティリティライブラリ

ストリングスライブラリ

コンテナライブラリ

アルゴリズムライブラリ

イテレータライブラリ

ニューメリックスライブラリ

入力/出力ライブラリ

ローカライゼーションライブラリ

正規表現ライブラリ (C++11)

アトミック操作ライブラリ (C++11)

スレッドのサポートライブラリ (C++11)

 

ユーティリティライブラリ

支援を入力します (basic types, RTTI, type traits)

動的なメモリ管理

エラー処理

プログラムユーティリティ

可変個引数関数

日付と時刻

関数オブジェクト

initializer_list (C++11)

bitset

hash (C++11)

関係演算子 Original: Relational operators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

ペアとタプル Original: Pairs and tuples The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

pair

tuple (C++11)

piecewise_construct_t (C++11)

piecewise_construct (C++11)

フォワード、スワップ、および移動 Original: Swap, forward and move The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.

swap

forward (C++11)

move (C++11)

move_if_noexcept (C++11)

declval (C++11)

 

関数オブジェクト

関数ラッパー Original: Function wrappers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
function (C++11)
mem_fn (C++11)
bad_function_call (C++11)
バインド Original: Bind The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
bind (C++11)
is_bind_expression (C++11)
is_placeholder (C++11)
_1, _2, _3, ... (C++11)
リファレンス·ラッパー Original: Reference wrappers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
reference_wrapper (C++11)
ref cref (C++11) (C++11)
オペレーターのラッパー Original: Operator wrappers The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
plus minus negate multiplies divides modulus logical_and logical_or logical_not	equal_to not_equal_to greater less greater_equal less_equal bit_and bit_or bit_xor
否定子 Original: Negators The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
unary_negate binary_negate	not1 not2
バインダーおよびアダプタは非推奨になりました Original: Deprecated binders and adaptors The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.
unary_function (廃止予定)
binary_function (廃止予定)
ptr_fun (廃止予定)
pointer_to_unary_function (廃止予定)
pointer_to_binary_function (廃止予定)
mem_fun (廃止予定)
mem_fun_t mem_fun1_t const_mem_fun_t const_mem_fun1_t (廃止予定) (廃止予定) (廃止予定) (廃止予定)
mem_fun_ref (廃止予定)
mem_fun_ref_t mem_fun1_ref_t const_mem_fun_ref_t const_mem_fun1_ref_t (廃止予定) (廃止予定) (廃止予定) (廃止予定)
binder1st binder2nd (廃止予定) (廃止予定)
bind1st bind2nd (廃止予定) (廃止予定)

 

Defined in header <functional>
template< class T > struct is_bind_expression;		(C + + 11以来)

Tはstd::bindの呼び出しによって生成された型である場合、このテンプレートは、メンバ定数value等しいtrueを提供しています。その他のタイプのために、valuefalseです.

Original:

If T is the type produced by a call to std::bind, this template provides the member constant value equal true. For any other type, value is false.

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バインドで生成された関数オブジェクトが呼び出されたときに、このタイプのバインド引数が、関数として呼び出されます：このテンプレートは、それがバインド部分式のタイプであったかのようにstd::bindによって扱われるべきであるユーザー定義型に特化することができるオブジェクトとバインドで生成したオブジェクトに渡されたすべてのバインドされていない引数が与えられます.

Original:

This template may be specialized for a user-defined type which should be treated by std::bind as if it was the type of a bind subexpression: when a bind-generated function object is invoked, a bound argument of this type will be invoked as a function object and will be given all the unbound arguments passed to the bind-generated object.

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Inherited from std::integral_constant

Member constants

value [静的]	true T is a function object generated by std::bindもし、そうでなければfalse Original: true if T is a function object generated by std::bind, false otherwise The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (公共の静的メンバ定数)

Member functions

operator bool	boolにオブジェクトは、value返しに変換します Original: converts the object to bool, returns value The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (パブリックメンバ関数)

Member types

タイプ Original: Type The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions.	Definition
value_type	bool
type	std::integral_constant<bool, value>

例

#include <iostream>
#include <type_traits>
#include <functional>
 
struct MyBind {
    typedef int result_type;
    int operator()(int a, int b) const { return a + b; }
};
 
namespace std {
    template<>
    struct is_bind_expression<MyBind> : public true_type {};
}
 
int f(int n1, int n2)
{
    return n1+n2;
}
 
int main()
{
    // as if bind(f, bind(MyBind::operator(), _1, _2), 2)
    auto b = std::bind(f, MyBind(), 2); 
 
    std::cout << "Adding 2 to the sum of 10 and 11 gives " << b(10, 11) << '\n';
}

Output:

Adding 2 to the sum of 10 and 11 gives 23

も参照してください

bind (C++11)	関数オブジェクトに1つ以上の引数をバインドします Original: binds one or more arguments to a function object The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. (関数テンプレート)