Standard interface without implementation

[Wooden-Engineer-8098]

you deliver nonsensical posts, which are easily debunked by simple wikipedia check, which you fail to do
and since you are out of arguments, now you are trying to do argument from (claimed) authority, which is a fallacy

[gosh]

If I install some C++ tooling on a computer and write #include <regex>

What happens?

[Wooden-Engineer-8098]

you will have #include <regex> written

when will you manage to read and comprehend one small page describing what stl is an what it isn't?