On Mon, 21 Sep 2020 at 19:38, Edward Diener via Boost
Since we are reviewing Vinnie Falco's JSON library I thought that this would be a good time to present a proposal to add information to each Boost library's meta/libraries.json file regarding the level of C++ standard compliance for that library. This could then be added to each library's visual documentation so that end-users would instantly know the C++ standard level they would need to use in order to use a Boost library.
My proposal is to add 3 fields whose data would be the same as the cxxstd allowed values from Boost Build, using the first value of each choice ( currently 03, 11, 14, 17, 20 ).
standard = minimum C++ level for the library extended = same functionality in the library as the minimum C++ level but with extended use given higher C++ levels required = new functionality in the library above the minimum C++ level which requires given higher C++ levels
I once looked [1] for ways to specify minimum required version of C++ in the meta/libraries.json and I'm glad the idea is picking up an interest. But, do we really need such a detailed set of tags? We have `std`, as Peter pointed out. Why not just accompany it with `std_required` and display it in the libraries list in the docs. That's all the majority of users/developers need to know really. Any extra info on correspondence between a library and C++ standard can be easily explained in a brief section in the library's docs. [1] https://lists.boost.org/Archives/boost/2019/11/247385.php Best regards, -- Mateusz Loskot, http://mateusz.loskot.net