I decided to start a new series about better understanding Dialyzer. The first post in the series goes through understanding the no_return and call warnings.

http://devonestes.herokuapp.com/decoding-dialyzer

Hey Process, there is a Message for you!

Messages are a fundamental part of concurrency in Elixir. In this article I introduce how messaging between processes works. We play with simple examples to see how a process sends and receives messages.

I’ve written a post about umbrella applications and testing with Mox. Check it out at: https://simplabs.com/blog/2019/03/13/elixir-umbrella-mox.html

In this post, I want to discuss how to measure our module’s external complexity with our test suite.

To demonstrate that:

1. I used StreamData to write a property-based test for a Fibonacci function.
2. I wrote two different implementations for the Fibonacci function, to explain the differences between internal and external complexity.

Finally, I reached a conclusion that different test styles are just different perspectives of understanding our code, and this idea aligns with the idea of complexity measurement pretty well.

https://dsdshcym.github.io/blog/2019/03/12/test-suite-as-a-complexity-measuring-tool/

I saw a single line of if statement in Elixir and it excited me enough to write an article about it.

https://dev.to/edisonywh/elixirs-if-and-elixirs-do-jol

After writing about how to use IO.write/2 to build cool command line interfaces, I decided to follow it up with a post about IO.ANSI. We walk through working with color, cursor movement, and covering the entire terminal.

https://dennisbeatty.com/2019/03/12/cool-clis-in-elixir-part-2-with-io-ansi.html

In this episode of ElixirMix, the panel catches up with Eric Oestrich about his ExVenture project. We talk about instrumenting Elixir applications for Prometheus, Elixir and CI solutions, his live coding on twitch.tv, letting Elixir talk to Ruby and Python, and much more!

Podcast Episode

EnvHelper is a convenience library for working with application and environment variables. Thanks to a pull request from Tony Walker, a lot of compiler warnings just went away for Elixir 1.5+.

Ack → the tiny drop-in package to enable ACK functionality in your Elixir microservice intercommunication.

Here is the article on What? Why? Why not?.

Recently at SmartLogic and in my side projects, I’ve wanted to test code that interacts with processes. This post covers what I came up with after listening to an episode of Elixir Mix and toying around with a better way to test my code.

https://blog.smartlogic.io/testing-against-processes-in-elixir/

using NIFs to segfault the BEAM

• erl_nif
• reductions
• dirty schedulers
• rustler
• and more!

https://dnlserrano.dev/2019/03/10/elixir-nifs.html

My personal notes from Lonestar Elixir Conf 2019.

Exenv provides an adapter-based approach to dynamically loading environment variables from external sources.

Features include:

• Adapters for both .env and .yml files.
• Makes loading env vars based on your app environment easy.
• No need to source env files all the time.

We sat down with numerous developers, including José Valim and Chris McCord, during the Saturday lunch at Lonestar ElixirConf 2019. Hear what they had to say about the state of Elixir!

https://podcast.smartlogic.io/special-lonestar-elixir-2019

In this episode I discuss the Basics of Agents. I talk about when / why you should use Agents over GenServer

https://www.codemy.net/posts/elixir-agent-basics-016/sets/elixir-foundation

• Add Type Specifications to Dbgi tab for :elixir_erl backend for .beam files.
• Cache all computed Elixir levels at the file, module, project, and SDK levels. The computed Elixir level is used to determine how to emulate the various grammar changes made for the different Elixir versions. This bug was potentially introduced as earlier asv7.0.0 (2017-12-15) and as late as v7.5.0 (2018-06-03) as that’s the history for LevelPropertyPusher.java and has affected all later versions. If you ever experienced the 6.X series as faster than the 7.X series and later, this bug may be why and you should upgrade/reinstall immediately.

Installation Instructions

I released v1.0.3 of Credo, the static code analysis tool emphasizing code consistency and teaching.

For details, please refer to the CHANGELOG.

Que v0.9 brings massive improvements to the performance and reliability of job workers, especially under high load / concurrency. 🎉🎉🎉

<img src=”https://i.imgur.com/Eec71eh.png” alt=”Que” width=”100px”>

Que is a simple background job processing library for Elixir that’s backed by Mnesia for storage. That makes it fast, reliable and still super easy to use without depending on any external services like Redis. 🙌

Code is read many more times than it is written, so it is important to us that our code is understandable. Here are a couple of guidelines we tend to follow in order to boost the discoverability and convey purpose to the reader.

https://medium.com/podium-engineering/using-control-flow-in-elixir-to-improve-discoverability-21341b27d851

I made https://github.com/obrok/quick_format for my own usage when formatting on save in Vim, because the latency was getting to me. It’s a little rough around the edges, but maybe someone will find it of use.