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C++: Why am I getting a static-assertion failure for this simple program?
I'm trying to experiment with std::tuple_cat but for some reason in my program the types do not match. Any idea why?
#include <tuple>
#include <type_traits>
int main()
{
int x{0}, y{0};
auto var = std::tuple_cat(std::tie(x), std::tie(y));
static_assert(
std::is_same<decltype(var), std::tuple<int, int>>::value, ""
);
}
1 Answer
- ?Lv 78 years agoFavorite Answer
std::tie(x) doesn't create a std::tuple<int>, it creates std::tuple<int&>
