this post was submitted on 25 Nov 2023
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First I wouldn't concern myself too much with trying to explain what differentiates Emacs from an IDE. Life is too short to get into such debates. I can't really summarize why anyone should care about Emacs vs their IDE of choice.
For me what separates Emacs from vscode for instance is not the IDE aspects but the integration with the broader ecosystem. I'm a PM that works with technical and data heavy products. The details matter. I frequently walk through the pipelines and code of my product to understand how it is implemented by the team(s).
For example you can break my underlying product down into 3-4 large blocks of pipelines. Each pieline has 6-7 stages that mix Spark and other Python jobs. For each pipeline and stage I have my own little literate org file that points to code, has small samples of inputs and outputs, and generally speaking allows a non data engineering professional such as myself keep up with people that are far better and keeping this all in their head.
I write down questions as I do this to browse and/or raise with the team. I can, when questioned by our senior leadership, truly explain what it is our team did and the impact it had.
I can't do that with an IDE. I can't see an easy way to do that with any of the other note taking tools. I can't jump between code browsing, executing and writing as seamlessly anywhere else.
I'd rate this as a story about the benefits of literate programming, and emacs org-babel is certainly best-of-breed for that. A more mainstream workflow for it might be through Jupyter notebooks, but they have several deficiencies compared to org-babel, chief of which is that one can't present blocks out-of-order in Jupyter, but can do with org-babel-tangle. as far as I know, no literate-programming solution can pull code off disk and put it in a document (the anti-tangle direction), let alone update a doc when code is modified. It's doable (start with git-actions, maybe?) but difficult. The lack of anti-tangle stopped my team from adopting literate programming as a collaboration tool, but it's still great in the downward direction, i.e., from doc to code.
I'd agree but it goes a bit beyond. Each file has pointers to the source code that is locally checked out. Sure it's not dynamic (e.g. my comments and understanding of what's going on don't sync with the codebase as it changes), but it still allows me to keep a mental map of what's going on and where each piece of the pipeline resides.
It's a mixture of roam, literate programming and an IDE for me. E.g. I can easily spin up a vterm, ssh into a spark node and test some of the code if I don't understand what it's doing thoroughly or to check if something isn't doing what is intended.
In my use case, collaboration is not required. I'm doing it for me so there's no real cost to the documentation and understanding getting out of date. I find emacs an invaluable tool to deepen my understanding and test things in the codebase. An IDE just doesn't fit the bill in that regard.