Arash Partow

> How? Git submodules record a specific commit. Something as simple as a force push could make the commit the submodule is based on invalid.

That would be a great approach, but perhaps for a first pass, I would propose something as simple as the python/go example - basically demoing the greatest amount of functionality,...

@kotakondo when you have a moment can you please review and merge this PR

@jaffasplaffa I think you probably want this: https://www.partow.net/programming/exprtk/readme.html#line_0626 Example usage: https://github.com/ArashPartow/exprtk-extras/blob/master/exprtk_fizzbuzz.cpp#L38

@nlohmann Happy for you to close this PR, as https://github.com/nlohmann/json/pull/4517 might be the more appropriate PR to make the necessary changes.