I created a language back in college, although it wasn't for any class but to learn how Forth worked. It was Forth-like, but unlike Forth, it had polymorphism and objects. I used the language for both work [1] and a class assignment (a Unix shell, where I made Unix commands first class objects---a really cool design and I got an A in the class). But I never did like the syntax (Reverse Polish Notation). I've thought of cleaning up the code [3] but ... it's a lot of code to update ...
[1] I worked for a neuroscientist [2] out of the Math Department writing software.
[3] It would win a "Most Abuse of the C Preprocessor" award, due to writing my own template package, long before C++ had templates. Also, the language written in C, not C++. Abuse indeed.
[1] I worked for a neuroscientist [2] out of the Math Department writing software.
[2] Dr. Arnold Mandell (https://en.wikipedia.org/wiki/Arnold_J._Mandell)
[3] It would win a "Most Abuse of the C Preprocessor" award, due to writing my own template package, long before C++ had templates. Also, the language written in C, not C++. Abuse indeed.