std::binary_function

 

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類型的支持 (basic types, RTTI, type traits)

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initializer_list （C++11）

bitset

hash （C++11）

關係運算符 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>=

雙和元組 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）

掉期，遠期和移動 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）

 

函數對象

功能包裝 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）
綁定 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）
參考包裝 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）
操作包裝 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
否定詞 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
已過時粘合劑和適配器 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 （過時了）
binary_function （過時了）
ptr_fun （過時了）
pointer_to_unary_function （過時了）
pointer_to_binary_function （過時了）
mem_fun （過時了）
mem_fun_t mem_fun1_t const_mem_fun_t const_mem_fun1_t （過時了） （過時了） （過時了） （過時了）
mem_fun_ref （過時了）
mem_fun_ref_t mem_fun1_ref_t const_mem_fun_ref_t const_mem_fun1_ref_t （過時了） （過時了） （過時了） （過時了）
binder1st binder2nd （過時了） （過時了）
bind1st bind2nd （過時了） （過時了）

 

Defined in header <functional>
template<     class Arg1,     class Arg2,     class Result > struct binary_function;		（過時了）

binary_function是一個基類，用於創建帶有兩個參數的函數對象.

Original:

binary_function is a base class for creating function objects with two arguments.

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binary_function不定義operator();預期派生類定義此。 binary_function只有三種 - first_argument_type，second_argument_type和result_type - 模板參數的定義.

Original:

binary_function does not define operator(); it is expected that derived classes will define this. binary_function provides only three types - first_argument_type, second_argument_type and result_type - defined by the template parameters.

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一些標準庫函數對象適配器，如std::not2，需要的函數對象他們適應有某些類型的定義;std::not2適合需​​要的函數對象有兩種類型，名稱first_argument_typesecond_argument_type。需要兩個參數的函數對象，從binary_function推導是一個簡單的方法，使他們與這些適配器兼容.

Original:

Some standard library function object adaptors, such as std::not2, require the function objects they adapt to have certain types defined; std::not2 requires the function object being adapted to have two types named first_argument_type and second_argument_type. Deriving function objects that take two arguments from binary_function is an easy way to make them compatible with those adaptors.

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binary_function被廢棄，在C + +11。 std::function和其他標準庫函數對象，它的功能已經過時了，它定義了需要的類型.

Original:

binary_function is deprecated in C++11. Its functionality has been made obsolete by std::function and other standard library function objects, which define the necessary types.

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會員類型

類型 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
first_argument_type	Arg1
second_argument_type	Arg2
result_type	Result

為例

#include <algorithm>
#include <functional>
#include <iostream>
#include <vector>
 
struct same : std::binary_function<int, int, bool>
{
    bool operator()(int a, int b) const { return a == b; }
};
 
int main()
{
    std::vector<int> v1{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
    std::vector<int> v2{10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0 };
    std::vector<bool> v3(v1.size());
 
    std::transform(v1.begin(), v1.end(), v2.begin(), v3.begin(), std::not2(same()));
 
    std::cout << std::boolalpha;
    for (std::size_t i = 0; i < v1.size(); ++i)
        std::cout << v1[i] << ' ' << v2[i] << ' ' << v3[i] << '\n';
}

Output:

0 10 true
1 9 true
2 8 true
3 7 true
4 6 true
5 5 false
6 4 true
7 3 true
8 2 true
9 1 true

另請參閱

function （C++11）	包裝任何類型的可調用對象與指定的函數調用簽名 Original: wraps callable object of any type with specified function call signature The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （類模板）
ptr_fun （過時了）	創建適配器兼容功能的包裝對象從一個指針到函數 Original: creates an adaptor-compatible function object wrapper from a pointer to function The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （函數模板）
pointer_to_binary_function （過時了）	適配器兼容的封裝為一個二元函數的指針 Original: adaptor-compatible wrapper for a pointer to binary function The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （類模板）
unary_function （過時了）	適配器兼容的一元函數的基類 Original: adaptor-compatible unary function base class The text has been machine-translated via Google Translate. You can help to correct and verify the translation. Click here for instructions. （類模板）