A Julia Interpreter and Debugger
Debuggers are one of those things that I almost never use, and have a completely unearned distaste for.  Literally every single time I've used a debugger it's been useful, but it's never something I think about using off the cuff.  Maybe I'm just an incompetent goober who spends too much time on IRC :)I've been getting into Julia a bit for personal projects, since I like it better than Python, so maybe this will be a good excuse to learn how to use debuggers more effectively.