I think this is a really common thing to do. Many of us need to use Python, Java, etc. at work and it is fun to use other languages. BTW, even though my preferr

I think this is a really common thing to do. Many of us need to use Python, Java, etc. at work and it is fun to use other languages. BTW, even though my preferred hacking language is Common Lisp, I also enjoy batteries included Racket and I have some of the examples from my Common Lisp book (https://leanpub.com/u/markwatson https://leanpub.com/u/markwatson), including my knowledge graph navigator, implemented in Racket. I have thought of writing a Racket book, but I will probably not get around to it because I have been enjoying Apple’s machine learning support for Swift and I am half way done writing a book on Swift and CoreML. Using different programming languages is mind expanding.