Seeing this gave me the idea to use Julia's metaprogramming to create a package for this... and of course someone has already done it: https://github.com/anthon

Seeing this gave me the idea to use Julia's metaprogramming to create a package for this... and of course someone has already done it: https://github.com/anthonyclays/RomanNumerals.jl https://github.com/anthonyclays/RomanNumerals.jl Amazingly, R actually seems to support Roman numerals natively: https://stat.ethz.ch/R-manual/R-devel/library/utils/html/roman.html https://stat.ethz.ch/R-manual/R-devel/library/utils/html/rom... Limited numerical range, but seems to have full support for treating them as normal numbers! The Wolfram Language has some support for converting to and from Roman numerals [1], and Common Lisp's `format` takes a `@R` modifier to print a number as its Roman numeral [2]. [1] https://reference.wolfram.com/language/ref/RomanNumeral.html https://reference.wolfram.com/language/ref/RomanNumeral.html [2] http://www.lispworks.com/documentation/HyperSpec/Body/22_c.htm http://www.lispworks.com/documentation/HyperSpec/Body/22_c.h...