This would let you run tests, too: https://en.wikipedia.org/wiki/Doctest https://en.wikipedia.org/wiki/Doctest On the other hand, why not just make it statica

This would let you run tests, too: https://en.wikipedia.org/wiki/Doctest https://en.wikipedia.org/wiki/Doctest On the other hand, why not just make it statically typed and list the types for each function?