I like Julia a lot, but the lack of row indices for the data frames is very annoying. I’m used to pandas and saddle and row indices are essential. Can they express anything just columns cannot? No, but they are a useful idea. I just use the Julia pandas wrapper when coding Julia and it works better than the native one. Also the performance is pretty good to.

Also I don’t like the begin/end block delimiters, but it’s not a huge deal. The Julia people keep repeating that curly brackets are too valuable, but I’m not at all convinced.

In addition, Julia should just give up on dynamic typing and make static typing mandatory. I understand why they allow it, but I still don’t agree.