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Elixir v1.17 released: set-theoretic data types, calendar durations, and Erlang/OTP 27 support Elixir v1.17 has just been released. 🎉 This release introduces set-theoretic types into a handful of language constructs. While there are still many steps ahead of us, this important milestone already brings benefits to developers in the form of new warnings for common mistakes. This new version also ad

This is article expands on the topic of gradual set-theoretic typing discussed during my keynote at ElixirConf US 2023. There is an on-going effort to research and develop a type system for Elixir, lead by Giuseppe Castagna, CNRS Senior Researcher, and taken by Guillaume Duboc as part of his PhD studies. In this article, we will discuss how the proposed type system will tackle gradual typing and h

A year ago, at ElixirConf EU 2022, we announced an effort to research and develop a type system for Elixir (video presentation) (written report). This work is happening under the lead of Giuseppe Castagna, CNRS Senior Researcher, and taken by Guillaume Duboc as part of his PhD studies, with further guidance from myself (José Valim). This article is a summary of where we are in our efforts and wher

This is article contains excerpts from my keynotes at ElixirConf Europe 2022 and ElixirConf US 2022. In May 2022, we have celebrated 10 years since Elixir v0.5, the first public release of Elixir, was announced. At such occasions, it may be tempting to try to predict how Elixir will look in 10 years from now. However, I believe that would be a futile effort, because, 10 years ago, I would never ha

Elixir v1.12 is out with improvements to scripting, tighter Erlang/OTP 24 integration, stepped ranges, and dozen of new functions across the standard library. Overall this is a small release, which continues our tradition of bringing Elixir developers quality of life improvements every 6 months. Some of these improvements directly relates with the recent efforts of bringing Numerical Computing to

Over the last releases, the Elixir team has been focusing on the compiler, both in terms of catching more mistakes at compilation time and making it faster. Elixir v1.11 has made excellent progress on both fronts. This release also includes many other goodies, such as tighter Erlang integration, support for more guard expressions, built-in datetime formatting, and other calendar enhancements. Duri

Elixir v1.10 comes with improvements to the standard library, the compiler, as well as several additions to the mix release feature added in v1.9. In particular, this version adds a lot of polish to existing features, such as our configuration system and our sorting APIs. Also note Elixir v1.10 requires Erlang/OTP 21+. This allows us to provide tighter integration with Erlang/OTP’s new logger. Thi

Elixir v1.9 is out with releases support, improved configuration, and more. We are also glad to announce Fernando Tapia Rico has joined the Elixir Core Team. Fernando has been extremely helpful in keeping the issues tracker tidy, by fixing bugs and improving Elixir in many different areas, such as the code formatter, IEx, the compiler, and others. Now let’s take a look at what’s new in this new ve

A new semester has started, which means it is time for a new Elixir release! This release brings quality of life improvements to the documentation, to error handling, to logger reporting, and to ExUnit, Elixir’s testing library. We are also glad to welcome Michał Muskała to the Elixir Core team. Prior to joining the team, he was a member of the Ecto team, he has made plenty of contributions to Eli

Elixir v1.6 includes new features, enhancements, and bug fixes. The main feature in this release is a code formatter. Important improvements can also be found in the standard library and in the Mix build tool. Code formatter The big feature in Elixir v1.6 is the addition of a code formatter and an accompanying mix format task that adds automatic formatting to your projects. The goal of the formatt

Today’s post marks the first in a new series bringing you the latest changes to the Elixir language. We’d love to hear from you about what you’d like to see in future posts so join the conversation on the Elixir Forum thread. So what’s in master? Let’s have a look: Disagreements about formatting are a thing of the past! As part of 1.6 we’ve added a code formatter to Elixir. The formatter is availa

Elixir v1.5 includes new features, enhancements, and bug fixes. While Elixir v1.4 focused on tools for concurrency and scalability, Elixir v1.5 brings many improvements to the developer experience and quality of life. As we will see, many of those are powered by the latest Erlang/OTP 20. This is also the last Elixir release that supports Erlang/OTP 18. Note: this announcement contains asciinema sn

Elixir v1.4 brings new features, enhancements and bug fixes. The most notable changes are the addition of the Registry module, the Task.async_stream/3 and Task.async_stream/5 function which aid developers in writing concurrent software, and the new application inference and commands added to Mix. In this post we will cover the main additions. The complete release notes are also available. Registry

Today we are glad to announce the official release of GenStage. GenStage is a new Elixir behaviour for exchanging events with back-pressure between Elixir processes. In the short-term, we expect GenStage to replace the use cases for GenEvent as well as providing a composable abstraction for consuming data from third-party systems. In this blog post we will cover the background that led us to GenSt

Elixir v1.3 brings many improvements to the language, the compiler and its tooling, specially Mix (Elixir’s build tool) and ExUnit (Elixir’s test framework). The most notable additions are the new Calendar types, the new cross-reference checker in Mix, and the assertion diffing in ExUnit. We will explore all of them and a couple more enhancements below. With this release, we also welcome Andrea Le

Elixir v1.6.5 Application behaviour View Source A module for working with applications and defining application callbacks. In Elixir (actually, in Erlang/OTP), an application is a component implementing some specific functionality, that can be started and stopped as a unit, and which can be re-used in other systems. Applications are defined with an application file named APP.app where APP is the a

Elixir v1.6.5 GenServer behaviour View Source A behaviour module for implementing the server of a client-server relation. A GenServer is a process like any other Elixir process and it can be used to keep state, execute code asynchronously and so on. The advantage of using a generic server process (GenServer) implemented using this module is that it will have a standard set of interface functions a

Documentation The Elixir programming language is broken into 6 applications. The links below reference the documentation for the modules and functions in each of those applications. See also our Getting Started guide and the Learning page for books, courses, videos, and more. v1.17 (stable) (download) Supported Erlang/OTP versions: 25, 26, 27. Elixir - standard library EEx - templating library ExU

v1.2 brings enhancements, bug fixes, performance improvements and more into Elixir. Elixir v1.2 relies on many features in Erlang 18, requiring at least Erlang 18+. Upgrading to Erlang 18 is therefore necessary before upgrading Elixir. To celebrate this release and the new year, we have also reviewed both the Getting Started and Mix & OTP guides, bringing it up to date and exploring new functional

Mix v1.0.5 Mix.Tasks.Deps List all dependencies and their status. Dependencies must be specified in the mix.exs file in one of the following formats: {app, requirement} {app, opts} {app, requirement, opts} Where: app is an atom requirement is a version requirement or a regular expression opts is a keyword list of options By default, dependencies are fetched using the Hex package manager: {:plug, "

Elixir’s official documentation includes a Getting Started guide to learn more about Elixir’s foundations. Later on, it explores how to build projects with Mix and OTP. Elixir also includes extensive API documentation. The Elixir Community has also produced plenty of resources to learn the language from different backgrounds and other perspectives. We list some of them below. We are sure you will

The quickest way to install Elixir is through install scripts, operating system package manager, or using one of the available installers. If such an option is not available, then we recommend using the precompiled packages or compiling the language yourself. All of these options are detailed next. Note that Elixir v1.17 requires Erlang 25.0 or later. Many of the instructions below will automatica