obidavis
obidavis
/ variant_magic.hpp
Last active
May 29, 2023 15:24
Construct a variant alternative from a runtime index. Uses a static constexpr table to promote runtime integers to std::integral_constants, and forwards these along with args to the variant alternative's constructor. Useful for deserialisation? TODO: bounds checks, how to handle invalid indices...
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| #pragma once | |
| #include <utility> | |
| #include <variant> | |
| /** | |
| * @brief Gives the template `B` specialised with | |
| * the parameter pack of the specialised template `A`. | |
| * e.g. if `A` is a `std::tuple<int, float>` and `B` is | |
| * a `std::variant`, `rebind_t<A, B>` will be a |