purerl VS FunkyABX

I will put in a good word for PureScript for the beam with `purerl`. It's my go-to for writing BEAM code nowadays. Notably PureScript tooling including LSP, package management, etc., just works, so you are able to just get to work in internalizing the way OTP and other Erlangy things are expressed in a statically typed, pure language.

https://github.com/purerl/purerl & https://purerl-cookbook.readthedocs.io/ for more information. Join the PureScript discord and the #purerl channel if you want help.

purerl is a compiler for turning PureScript code into Erlang code, so that you're able to write BEAM (the Erlang virtual machine) applications using it.

You've been able to write PureScript that compiles to Erlang and has perfect interop for years, via `purerl`[0]. Using it with Elixir is as simple as adding `purerlex` as a compiler and having your PureScript code automatically compile when `mix` compiles things, and off you go.

In terms of the typing itself, it's exactly what you get in all of PureScript, strict static typing with no `any` or the like. Using `Pinto`, the de facto OTP layer in PureScript your processes are typed, i.e. their `info` messages & state are typed, which means that they are all much more like strongly typed state machines than anything else.

You can see an example of a basic `gen_server` here:

https://pastebin.com/UTEfz7Wg

The differences aren't very big in terms of what you'd expect to be doing. One small thing to note is that the `GenServer.call` expects a closure to be passed instead of having the split between `gen_server:call` & `handle_call`, removing the need for synchronizing two places for your messages being sent and handled.

0 - https://github.com/purerl/purerl

All web frameworks fail with forms one way or the other :)

I think one point would be the docs, to outline the basic cases, best practices. Maybe something tying the form helpers and changeset.

I have a side project [0] with a form which have inputs dependant of others and a dynamic section (assoc).

I struggled a bit with the data, checking what I would get inside a changeset struct, until I "discovered" get_field and put_change.

For the assoc I was also a bit lost until I read an article using a delete virtual field. In the end I made it work but I still not sure I used all the right changeset functions.

To LiveView credits this app has been used all over the world and got very good feedback, nobody mentioned any lag issue etc (well, someone with a crappy connexion in Istanbul once got an incomplete uploaded file without getting an error).

[0] https://github.com/conradfr/FunkyABX

Hello, this is a LiveView app (although most of the player code is in javascript).

https://github.com/conradfr/FunkyABX