The Medium article has been removed. I think the same article (possibly under a different author's name?) appeared here https://github.com/Dobiasd/articles/blob

The Medium article has been removed. I think the same article (possibly under a different author's name?) appeared here https://github.com/Dobiasd/articles/blob/master/functional_programming_in_cpp_with_the_functionalplus_library_today_hackerrank_challange_gemstones.md https://github.com/Dobiasd/articles/blob/master/functional_p...