Here is one in Idris. https://gist.github.com/chrisdone/672efcd784528b7d0b7e17ad9c115292 https://gist.github.com/chrisdone/672efcd784528b7d0b7e17ad9c... Becaus

Here is one in Idris. https://gist.github.com/chrisdone/672efcd784528b7d0b7e17ad9c115292 https://gist.github.com/chrisdone/672efcd784528b7d0b7e17ad9c... Because Idris supports dependent types it is prettier both in the implementation and usage.