AdventOfCode2020 VS vim-slime

> At the end of the day, you quit your environment and shut down. How do you ensure your interactive work is not lost and the environment is still what you expect it to be when you start again the next day. How would you compile such a program?

Modern Smalltalks have solved this problem. Smalltalk has the concept of Packages just like Java, and as you go along building your environment, even though you are modifying the Smalltalk image, you can export these packages to plain-text files, and put them in Git, just like any other language. The environment itself supports Git integration (called Iceberg in Pharo).

> Also, if significant parts of the source code are written inside the REPL, wouldn't the lack of modern IDE features be a hassle? No syntax highlighting, no code completion, no code inspections etc. Or are there tools that offer those?

The command-line REPLs that other languages have are NOT what you get in Smalltalk. I believe the author means the entire interactive environment, and the "style" of development is REPL, not the actual UI. The Smalltalk "IDE" is just as powerful as any other IDE, including code completion, automatic generation of certain getters/setters, renaming methods/classes, finding uses, jumping to declarations and even refactoring within methods. The difference between a normal IDE for Java is that this "IDE" is pervasively available, including in breakloops and the debugger. Since the system is live, there is no separate notion of debugging, the debugger is always there, and you can use all the editor IDE features when stopped in a debugger. You no longer have to deal with a crippled debugging environment way different from your authoring environment. It truly is mind-blowing!

I highly recommend giving Pharo Smalltalk a spin (by following their MOOC or similar). This video is also worth a watch - https://www.youtube.com/watch/baxtyeFVn3w

I did most of this year's Advent Of Code in Smalltalk and saved it in Git just like any other language. Someone else can then import it into their image. https://github.com/nikhilm/AdventOfCode2020.

Note that the source code looks very verbose, but you never actually interact with the source like that. The source is just a serialization. Your actual environment only ever shows you UI elements and entire IDE windows describing your classes and individual methods.

The only thing I miss in Pharo is that it doesn't have Vim keybindings :)

https://github.com/jpalardy/vim-slime

you can have a REPL in nvim/vim/tmux/screen/another terminal/or any other window , and send regions from your vim buffer to that repl

For vim users, check out vim-slime[1]. It's really changed my workflow! It can work for any language that uses a REPL, including bash/shell. Combined with tmux, it is an amazing and (in hindsight) obvious tool. I honestly can't imagine myself going back to not having it now.

[1]: https://github.com/jpalardy/vim-slime

For splitting the terminal you could try either toggleterm or tmux. If you want to send things from one tmux pane to another, then you can use slime. For a toggle-able filetree, you can use nvim tree.

I use vim-slime. It works really well in tmux. https://github.com/jpalardy/vim-slime. Just blocks of code as cells

This is yet another plugin to capture text from the current buffer and send it to a tmux pane. I was using https://github.com/jpalardy/vim-slime previously, and wished I could just set sensible defaults for where to send text. Also, I wanted to create my first Neovim plugin! I have to say, after writing a bit of Vimscript in the past, the Neovim Lua API makes me a much happier camper.

I use slime (which sends code to tmux panes), tmux (of course) and ipython for this. For example, the code I sent to ipython was with a simple keybinding ...

If I understand correctly, what you need is a combination of vim, tmux, ipython and vim-slime.

REPL??? Do you have a very-easy-to-use way of running and testing your code? From vim-slime to nvim sniprun to autocommands with the built in terminal, to an external repl like ptpython (for python obviously). iron.nvim and conjure are two other neovim repl plugins. There are many ways of running the code that you're working on, and having something that makes this really easy for you is pretty essential. (sometimes I use inotifytools on linux to literally just run the script every time I save it.)

For the record/list, there's also: - https://github.com/hkupty/iron.nvim and - https://github.com/jpalardy/vim-slime

However, if you're coding in an interpreted language like python, R, bash, etc., then there is one plugin which you are likely to find helpful. That's vim-slime.