Initialize std::array with implied length

Question

In C you can do int a[] = {1,2,3,4,5}, but C++11 std::array<int> a = {1,2,3,4,5} will give a "too few template parameters" compile error. Any way around this?

Answer 1

The best you can have is a make_array, something like:

template<typename T, typename...Ts>
constexpr std::array<T, 1 + sizeof...(Ts)> make_array(T&& head, Ts&&...tail)
{
     return {{ std::forward<T>(head), std::forward<Ts>(tail)... }};
}