std::divides<void>

 

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定義於標頭檔案 <functional>
template<> class divides<void>;		(C++14 起)

std::divides<void> 是 std::divides 的特化，其引數和返回型別是推導的。

成員型別

型別	定義
is_transparent	未指定

成員函式

operator()

返回兩個引數的商 (公開成員函式)

std::divides<void>::operator()

template< class T, class U > constexpr auto operator()( T&& lhs, U&& rhs ) const     -> decltype(std::forward<T>(lhs) / std::forward<U>(rhs));

返回 lhs 和 rhs 的商。

引數

lhs, rhs

-

要相除的值

返回值

std::forward<T>(lhs) / std::forward<U>(rhs).

示例

執行此程式碼

#include <complex>
#include <functional>
#include <iostream>
 
int main()
{
    auto complex_divides = std::divides<void>{}; // “void” can be omitted
    constexpr std::complex z1{8.0, 4.0}, z2{1.0, 2.0};
 
    std::cout << std::showpos
              << complex_divides(z1, z2) << ' ' << z1 / z2 << '\n'
              << complex_divides(z1, 5.) << ' ' << z1 / 5. << '\n'
              << complex_divides(6., z2) << ' ' << 6. / z2 << '\n';
}

輸出

(+3.2,-2.4) (+3.2,-2.4)
(+1.6,+0.8) (+1.6,+0.8)
(+1.2,-2.4) (+1.2,-2.4)