get 함수 <tuple>
Gets an element from a tuple object.
template<int Idx, class T1, class T2, ..., class TN>
RI get(tuple<T1, T2, ..., TN>& tpl);
template<int Idx, class T1, class T2, ..., class TN>
RI get(const tuple<T1, T2, ..., TN>& tpl);
매개 변수
Idx
가져올 요소의 인덱스입니다.TN
The type of the Nth tuple element.tpl
The tuple to select from.
설명
The template functions return a reference to the value at index Idx in the tuple object tpl. If the corresponding type Ui is a reference type both functions return Ui; otherwise the first function returns Ui& and the second function returns const Ui&.
예제
// std_tr1__tuple__get.cpp
// compile with: /EHsc
#include <tuple>
#include <iostream>
typedef std::tuple<int, double, int, double> Mytuple;
int main()
{
Mytuple c0(0, 1, 2, 3);
// display contents " 0 1 2 3"
std::cout << " " << std::get<0>(c0);
std::cout << " " << std::get<1>(c0);
std::cout << " " << std::get<2>(c0);
std::cout << " " << std::get<3>(c0);
std::cout << std::endl;
return (0);
}
요구 사항
Header: <tuple>
네임스페이스: std