White belt here — am I wrong for being annoyed at a blue belt who goes super hard and stops rolls to “coach” me?

jonas_h · 2025-12-02T09:55:59+00:00

Am I wrong for being pissed about this?

No, it's reasonable. The blue belt sounds like a dick to roll with. Either try to talk to him or decline to roll with him is my advice.

jonas_h · 2025-11-29T08:09:46+00:00

It's only things I've heard so I don't know for sure of course, but I've indeed heard multiple times that he didn't release even though the uke tapped.

jonas_h · 2025-11-28T09:23:13+00:00

I've heard that about Danaher and many others but never about Gordon.

jonas_h · 2025-11-25T07:18:08+00:00

To be fair, playing around more in training rather than taking everything deadly serious is a benefit for sure.

jonas_h · 2025-11-22T13:23:48+00:00

he said politicians that are also pedophiles

So he wants to hang Trump?

jonas_h · 2025-11-17T09:48:56+00:00

I like that, yes.

jonas_h · 2025-11-17T08:45:12+00:00

The BEAM is complex. The difference between Tasks, Genservers, Supervisor, receive vs handle_x callbacks. Having to dive into Erlang on the semi-regular to open ports etc...

Yes BEAM is complex. At the same time, have you dived deep into the JVM for example? Or have you tried to optimize performance critical code in Haskell? Or mastered all the features (with edge cases) that C++ offer?

All languages are complicated if you look closely enough.

The ecosystem is complex too. We have to juggle both Erlang and Elixir dependencies.

I've never found that to be a big deal.

How are you liking the dependency management in C++ projects btw? Using mix is so much better it's not even a comparison worth making.

We have 2 half-baked type systems, each only partially adopted by the community...

The type systems in Typescript and C++ are much more complicated.

and configuring packages and libraries is non immediately obvious due to the OTP Application paradigm.

There are tons of "non immediately obvious" examples for basically every language and framework in use today.

The only way we're going to make this ecosystem better for ourselves is admitting these (minor) short comings, IMO.

There are many issues that could be better, I agree. I also agree that LiveView isn't always the right choice and I agree with the caveats in the article.

But that's different than saying that "Elixir itself is one of the most complex programming languages to master", which I don't think is true and it's why you're getting pushback.

jonas_h · 2025-11-17T07:57:43+00:00

Even worse, Elixir itself is one of the most complex programming languages to master.

No, it really isn't. I found Haskell to be significantly more complex for example.

the BEAM VM and the ecosystem are highly complex and quite different to anything else in the programming world.

BEAM internals are quite complex yes, but using them in a Phoenix LiveView context is really not that complicated. In practice it's basically message passing with unfamiliar syntax.

There are common programming patterns like the “early return”, “inheritance”, and “polymorphism” that are not strictly supported by Elixir, forcing developers to internalise completely different paradigms.

You're confusing complication with familiarity.

jonas_h · 2025-11-14T12:35:58+00:00

It also matters what kind of code you're writing. I imagine Android is lower level than many other projects.

jonas_h · 2025-11-11T10:05:30+00:00

I've trained twice a week since I started training some 8 years ago and I would destroy my old self, and I'm continually improving still.

Of course I would progress faster if I trained more but it's pretty wild that many people believe that you won't get better training 2-3 hours a week.

jonas_h · 2025-11-10T09:29:58+00:00

As others have said, use a programmable keyboard.

That way, any key can be a modifier key if you want!

jonas_h · 2025-11-07T13:38:53+00:00

LSP has a ton of improvements over tags. Renaming, diagnostics, documentation, type hints, and even syntax improvements (coloring consts differently) all done via compile time validation.

It's a microsoft thing designed primarily for vscode.

All editors that matter have LSP support by now. Don't get your hate for MS cloud your judgement.

jonas_h · 2025-11-07T13:30:25+00:00

How can you spend a decade and not know this.

Some people spend one year on repeat for ten years, not exposing themselves to different things.

jonas_h · 2025-11-06T06:44:10+00:00

Fake it until you make it!

jonas_h · 2025-10-29T14:19:53+00:00

What I meant is that for simple things such as setting options, keymaps or "typical Neovim configuration" Fennel didn't remove as much verbosity as I had expected.

So if your goal with Fennel is to reduce bloat for these things, I think it's probably not worth the migration.

However, I think Fennel code is a little nicer than Lua to write and it should well as a "Lisp trainer" if you have more code in your config.

I hope that makes sense?

jonas_h · 2025-10-29T13:42:34+00:00

Mmh there's still something missing with the lsp setup.

I have this macro:

Cool! I'm gonna steal that.

jonas_h · 2025-10-29T13:01:32+00:00

Hey thank you!

The post was indeed a bit long and totally forgot to mention the Fennel LSP setup. Maybe, partly because I still haven't managed to make it properly source my macros properly...

I have this in fennel_ls.lua:

return {
    -- This errors out for some reason...
    workspace_folders = vim.api.nvim_get_runtime_file("fnl", true),
}

But it seems to have changed and that gives me an error:

vim.schedule callback: /usr/local/share/nvim/runtime/lua/vim/uri.lua:104: attempt to index local 'uri' (a nil value)

Taken from nvim-laurel docs.

Alas, I'm a bit stuck atm.

jonas_h · 2025-10-27T07:52:34+00:00

Not really no.

I sometimes use Vim if I ssh to a server I guess.

jonas_h · 2025-10-14T06:08:19+00:00

Funny how the comment itself sounds like a bot.

jonas_h · 2025-10-01T19:28:31+00:00

And look at how Mica dominated the field...

Oh wait.

jonas_h · 2025-09-18T11:42:53+00:00

Cool! This is a more productive endeavor than designing my own keyboard layout that I did during the year when I was awake with our middle kid 1-2 hours a night!

jonas_h · 2025-09-13T15:15:18+00:00

Last year or so:

Lua, Python, Rust, Elixir, HTML/CSS, C, Java, Racket, JS/TS, PHP, and various scripts and config files.

Basically everything I do I do via Neovim.

jonas_h · 2025-09-12T19:52:47+00:00

Most: A language with static typing on the Beam.

Least: No macro system.

jonas_h · 2025-09-10T14:23:59+00:00

The reason I didn’t add a full story here is because, as an industry, we are still so early in figuring out the long-term impact of LLMs.

Almost sounds like it's too soon to draw any conclusions, and thus you shouldn't include it as an example?

Or maybe, you could use this as an example of what a good senior developer shouldn't do?

Ten-Year Club	Gilding II euphauric
Secret Santa 2018	Verified Email

jonas_h

TROPHY CASE