cppreference.com 创建账户 页面 讨论 变换 查看 编辑 历史 std::make_pairC++ 工具库 std::pair 在标头 <utility> 定义 template< class T1, class T2 > std::pair<T1, T2> make_pair( T1 x, T2 y ); (C++11 前) template< class T1, class T2 > std::pair</*V1*/, /*V2*/> make...
https://en.cppreference.com/w/cpp/utility/pair/make_pair That is why line 8 works, the derived types are std::string and int. The int is then promoted to size_t when the pair is created. When working with std::pair you should also include the <utility> header, it's where std::...
构造std::pair对象,从参数类型推导目标类型。 推导结果类型V1与V2是std::decay<T1>::type与std::decay<T2>::type(应用到按值传递的函数参数的通常类型变换),除非应用std::decay到某类型X产生std::reference_wrapper<X>,此情况下推导结果类型是X&。
https://en.cppreference.com/w/cpp/language/structured_binding 看你引用的这本书籍名称是《深入理解C...
推导结果类型 V1 与V2 是std::decay<T1>::type 与std::decay<T2>::type (应用到按值传递的函数参数的通常类型变换),除非应用 std::decay 到某类型 X 产生std::reference_wrapper<X> ,此情况下推导结果类型是 X&。 (C++11 起) 参数 t, u - 构造pair 所用的值 返回值 含有指定值的 std::pair...
问具有指定模板参数的C++11 make_pair无法编译EN函数模板与类模板在C++98一起被引入，因种种原因，类...
而不需要告诉它。参见http://www.cplusplus.com/reference/std/utility/make_pair/的示例 ...
Data racesIf either (or both) T1 or T2 is an rvalue reference type of a type supporting move semantics, its corresponding argument is modified.Example 1In the following example, we are going to consider the basic usage of the make_pair() function....
// cliext_make_pair.cpp // compile with: /clr #include <cliext/utility> int main() { cliext::pair<wchar_t, int> c1(L'x', 3); System::Console::WriteLine("[{0}, {1}]", c1.first, c1.second); c1 = cliext::make_pair(L'y', 4); System::Console::WriteLine("[{0}, {1...
问使用std::make_pair与std::string (非rvalue引用问题)EN#include <string>#include <locale>#...