get_const.pass.cpp [plain text]
#include <tuple>
#include <string>
#include <cassert>
int main()
{
{
typedef std::tuple<int> T;
const T t(3);
assert(std::get<0>(t) == 3);
}
{
typedef std::tuple<std::string, int> T;
const T t("high", 5);
assert(std::get<0>(t) == "high");
assert(std::get<1>(t) == 5);
}
{
typedef std::tuple<double&, std::string, int> T;
double d = 1.5;
const T t(d, "high", 5);
assert(std::get<0>(t) == 1.5);
assert(std::get<1>(t) == "high");
assert(std::get<2>(t) == 5);
std::get<0>(t) = 2.5;
assert(std::get<0>(t) == 2.5);
assert(std::get<1>(t) == "high");
assert(std::get<2>(t) == 5);
assert(d == 2.5);
}
}