On 2020-02-21 11:22, Peter Sommerlad (C++) via Std-Proposals wrote:
> see my "PSSST" (Peter's simple strong typing) framework attempt (not
> finished) at
>
> https://github.com/PeterSommerlad/Psst/blob/master/cevelop-workspace/PssstTest/src/pssst.h
>
> achievable through a library, so no need to change. In addition it
> allows you to clearly limit the available operations to a set suitable
> for your domain specific type. For usage see accompanying test cases.

There is also Boost.TypeErasure.