eqwalizer | otp | |
---|---|---|
11 | 23 | |
500 | 11,041 | |
0.4% | 0.2% | |
8.2 | 10.0 | |
12 days ago | 7 days ago | |
Scala | Erlang | |
Apache License 2.0 | Apache License 2.0 |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
eqwalizer
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Switching to Elixir
I don't think the implementation itself is at fault, but yes, I do think that the design of dialyzer makes it an (at times) faulty type checker. The unfortunate reality of a type checker that fails sometimes is that it makes it mostly useless because you can never trust that it'll do the job.
To be clear, I've had it fail in a function where I've literally specced that very function to return a `binary` but I'm returning an `integer` in one of the cases. This is a very shallow context but it can still fail. Now add more functions, maybe one more `case`.
I think an entire rethink of type checking on the BEAM had to be done and that's why eqWalizer[0] was created and why Elixir is looking to add an actual sound, well-developed type checker. Gleam[1] I would assume is just a Hindley-Milner system so that's completely solid. `purerl`[2] is just PureScript for the BEAM so that's also Hindley-Milner, meaning it's solid. `purerl` has some performance issues caused by it compiling down to closures everywhere but if you can pay that cost it's actually pretty fantastic. With that said my bet for the best statically typed experience right now on the BEAM would be `gleam`.
0 - https://github.com/WhatsApp/eqwalizer
1 - https://gleam.run
2 - https://github.com/purerl/purerl
- Unpacking Elixir: Concurrency
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eqwalizer VS Gradualizer - a user suggested alternative
2 projects | 17 Apr 2023
- Erlang: The coding language that finance forgot
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Phoenix 1.7 is View-less
While it's not static-typing, compile-time type checking for Erlang have come a long way: Eqwalizer works pretty well - but I may be biased since my employer sponsors the project.
1. https://github.com/WhatsApp/eqwalizer
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[New] How do you verify program correctness in Elixir?
Note there is also research happening in this area by the Elixir team. The WhatsApp is also working on static types for Erlang, which I am certain will be available for Elixir too at some point.
- Eqwalizer: A Type-Checker for Erlang
- Eqwalizer: WhatsApp’s Erlang Type Checker
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Elixir Livebook now as a desktop app
From the discord blog posts it seems that elixir powers the chat system, with rust and python as the other two main languages in their stack.
As for whatsapp, they are mainly a erlang shop and yesterday they open sourced a type checker for erlang:
https://github.com/WhatsApp/eqwalizer
otp
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Install mutiple Erlang and Elixir with vfox
Theoretically, you could install any version that appears in https://github.com/erlang/otp/releases. Since it is compiled and installed from source, the installation process will take some time. When you see the following message, the installation is complete.
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Perfect Elixir: Environment Setup
I’m on MacOS and erlang.org, elixir-lang.org, and postgresql.org all suggest installation via Homebrew, which is a very popular package manager for MacOS.
- Scheduling Internals
- Epoll: The API that powers the modern internet (2022)
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Elixir v1.15 released
You can read my original report and subsequent PRs in Erlang/OTP here: https://github.com/erlang/otp/issues/5811
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Open Sourcing Erlfuzz
- a massive speedup of a common static analyzer for Erlang (https://github.com/erlang/otp/pull/5997)
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Why are there so many languages?
Funny that you should mention Erlang. Looking at the Github for Erlang, it appears that the source for Erlang is 16.8% written in C. I would bet these are not the least important bits of the whole thing. So, Erlang depends on C.
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Erlang: More Optimizations in the Compiler and JIT
It looks more like some of the JIT improvements made it profitable to manually unroll some loops in the base64 module: https://github.com/erlang/otp/commit/a03cf1601605dee767cd9d5...
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Mixing sync and async views in the same application
https://github.com/erlang/otp as far as I know. It's somewhat confusing and I honestly couldn't say exactly where the BEAM VM or OTP or ERTS (Erlang Runtime System) start and end. I've never dug into it. I just install Elixir and sometimes Erlang through the ASDF tool, which does all the compiling for me.
- When people send a https request to my custom web server, it crashes the entire system. How do I fortify my system not to accept em?
What are some alternatives?
gradient - Gradient is a static typechecker for Elixir
protoactor-go - Proto Actor - Ultra fast distributed actors for Go, C# and Java/Kotlin
erllambda - AWS Lambda in Erlang
Elixir - Elixir is a dynamic, functional language for building scalable and maintainable applications
explorer - Series (one-dimensional) and dataframes (two-dimensional) for fast and elegant data exploration in Elixir
calypso - Calypso is a mostly imperative language with some functional influences that is focused on flexibility and simplicity.
kino - Client-driven interactive widgets for Livebook
scryer-prolog - A modern Prolog implementation written mostly in Rust.
FunkyABX - Audio blind tests
caramel - :candy: a functional language for building type-safe, scalable, and maintainable applications
Gradualizer - A Gradual type system for Erlang
cdk-emqx-cluster