std::make_tuple

Header: <tuple>

Creates a tuple object, deducing the target type from the types of arguments.

# Declarations

template< class... Types >
std::tuple<VTypes...> make_tuple( Types&&... args );

(since C++11) (constexpr since C++14)

# Parameters

args: zero or more arguments to construct the tuple from

# Return value

A std::tuple object containing the given values, created as if by std::tuple<VTypes…>(std::forward(t)…).

# Example

#include <iostream>
#include <tuple>
#include <functional>
 
std::tuple<int, int> f() // this function returns multiple values
{
    int x = 5;
    return std::make_tuple(x, 7); // return {x,7}; in C++17
}
 
int main()
{
    // heterogeneous tuple construction
    int n = 1;
    auto t = std::make_tuple(10, "Test", 3.14, std::ref(n), n);
    n = 7;
    std::cout << "The value of t is ("
              << std::get<0>(t) << ", "
              << std::get<1>(t) << ", "
              << std::get<2>(t) << ", "
              << std::get<3>(t) << ", "
              << std::get<4>(t) << ")\n";
 
    // function returning multiple values
    int a, b;
    std::tie(a, b) = f();
    std::cout << a << ' ' << b << '\n';
}