C ++ 11 constexpr and typeid (type)

Question

Is there any way how to get typeidin a variable at compile time using constexpr?

This does not work because it std::type_indexdoes not have constexpr ctor

constexpr std::type_index i = typeid(double);

Answer 1

In a sense, there are:

constexpr const std::type_info &i = typeid(double);

You must remember that typeidtype returns const std::type_info &, not std::type_index.