[vinkelhake]

> It’s too bad you still can’t cast a char to a uint8_t though in a constexpr expression.

Uh, what? That has worked fine since the introduction of constexpr in C++11.

[TuxSH]

Maybe they meant reinterpret_cast from/to char to u8, which in this case isn't possible in constexpr.

[epcoa]

Why would you need to do that though if you can static_cast?