[pjmlp]

That is why main() has a static constexpr, to force its execution at compile time. A trick I learned from Jason's screencasts.

Although, you're right. I tried it back at home on VC++ and its static analyser wasn't happy.

My idea was to make use of template metaprogramming to generate the string buffer, there are a couple of examples of such attempts.

However, I guess with such amount of additional code, I should declare defeat on the original comment.

[tialaramex]

Seems to me the good news is that your compiler told you this doesn't work.

In languages where you can't tell the compiler you think this is constant, there's a risk you delude yourself, especially because computers are very fast, and you think you've got O(1) when it's actually O(N) or even O(N^2) and one day N gets big enough and you're in real trouble.

[pjmlp]

Yeah, because I am one of those persons that when I use languages like C and C++, and have the last word, the seatbelt and metal gloves are always turned on.

Those examples for HN recreation naturally weren't written with such care.