std::experimental::apply - cppreference.com (original) (raw)

	Merged into ISO C++ The functionality described on this page was merged into the mainline ISO C++ standard as of 3/2016, see std::apply (since C++17)

| | | | | ----------------------------------------------------------------------------------- | | ------------------------- | | template< class F, class Tuple > constexpr decltype(auto) apply(F&& f, Tuple&& t); | | (library fundamentals TS) |

Invoke the Callable object f with a tuple of arguments.

[edit] Parameters

[edit] Return value

What returned by f.

[edit] Possible implementation

[edit] Example

#include #include   template<typename... Ts> void print_tuple(const std::tuple<Ts...> &tuple) { std::apply([](const auto&... elem) { ((std::cout << elem << '\n'), ...); }, tuple); }   int main() { const std::tuple<int, char> t = std::make_tuple(5, 'a'); print_tuple(t); }

Output:

[edit] See also