Made me think about this book https://webperso.info.ucl.ac.be/~pvr/book.html https://webperso.info.ucl.ac.be/~pvr/book.html where the author creates a mini lang

Made me think about this book https://webperso.info.ucl.ac.be/~pvr/book.html https://webperso.info.ucl.ac.be/~pvr/book.html where the author creates a mini language and extends it in many different paradigms.