We introduce an approach to testing time- and timer- based logic in Elixir with an unburdensome variant of dependency injection https://dev.to/savonarola/testing-timer-based-logic-in-elixir-with-klotho-library-2c90

In this post we go thru a simple Network Time Protocol server implementation in Elixir. While the end product is not production ready we learn a lot about UDP, sniffing traffic, GenServers, bitstrings, sigils, and other cool tricks.

https://0x7f.dev/post/ntp-implementation-in-elixir

Livebook 0.10 was released! 🎉

The main new feature is Multi-Session Livebook Apps. You can think of them as something similar to scripts, but instead of running in a terminal, they are interactive web applications accessed through the browser.

The other new features are:

• Presentation View
• Initial Erlang Support
• Live Doctests
• Dataframe File Export

Announcement blog post: https://news.livebook.dev/whats-new-in-livebook-0.10—introducing-multi-session-livebook-apps-3Dbpss

Full changelog: https://github.com/livebook-dev/livebook/blob/v0.10/CHANGELOG.md

Rearrange Phoenixʼ config files to improve their developer experience!

https://bitcrowd.dev/two-small-adjustments-of-phoenix-application-configuration

An event organized by the Elixir community. Dates: September 21st and 22st, 2023 Location: Fortaleza, Ceará, Brazil. Stay tuned for more information at https://elixiremfoco.com/elixirfortalezaen

Ever want to do something N times?

If you come from the Ruby on Rails world (like I did), you might be looking for something like 5.times { do_something }.

This is one way I like to do this:

• Create a stream with the function you want to run repeatedly with Stream.repeatedly/1.
• Then, when you want to run that N times, you Enum.take(N)!

Check it out! 👇

https://www.elixirstreams.com/tips/run-elixir-function-n-times

My experiment of a small language hosted in elixir finds closure with humor, after becoming an interactive stateful system with weird features and a graphical liveview interface. The post features a recreation of “99 bottles of beer” in an ovo-idiomatic way.

https://lucassifoni.info/blog/small-lang-elixir-8/

An Elixir implementation of TypeIDs: type-safe, K-sortable, and globally unique identifiers inspired by Stripe IDs

typeid_elixir | hex.pm sloanelybutsurely/typeid-elixir hexdocs

Episode 159 of Thinking Elixir. Mark and David share what’s caught their interests and focus. Langchain is a popular framework in JS and Python communities for building services that knit together different services enabling people to quickly build impressive demos. Mark talks about the parts of Langchain that interest him and how he’s been building ways for Elixir apps to play in that space too. We also catch up with David’s job change, moving, and talk about his ideas around using Oban for managing data migrations in a new way.

https://podcast.thinkingelixir.com/159

Elixir 1.15 introduced new DateTime and Date functions to compare dates.

Let’s cover the new functions, what already exists, and what to avoid at all costs!

• New ✨: DateTime.before?/2, DateTime.after?/2 (and their Date counterparts) are new (since Elixir 1.15) and allow for strict comparison of datetimes (and dates),
• We’ve had DateTime.compare/2 for a while, and it returns :gt, :lt, or :eq. The nice thing about compare/2 is that it has equality.
• Never use <, >, == to compare dates or datetimes! They perform structural comparisons. They don’t understand semantics.

Check out a short video of me walking through those! 👇 https://www.elixirstreams.com/tips/comparing-elixir-datetimes-and-dates

Changelog

v15.1.0

Enhancements

• Add “Homebrew on Linux” SDK locations.

Bug Fixes

• Replace uses of Cell.horizontalAlign(HorizontalAlign) The API is scheduled for removal and is replaced by Call.align(AlignX.FILL).
• Ignore group: for docs.
• Don’t resolve built-in types against the index if index is updating.
• findModuleForPsiElement in mostSpecificSdk in read action.
• Skip finding mix.exs for OTP apps if it can’t be read.
• Include mix new stderr in IOException for better triage.
• Highlight binary numbers and module attributes as usual in types.
• Use org.apache.commons.lang.SystemUtils instead of org.codehaus.plexus.interpolation.os.Os to detect if on Windows for Test marker file URL.
• Call FileIndex.getContentRootForFile in ReadAction when getting working directory for mix format.
• Don’t include null target usage types when finding usage type across all targets.
• Skip bare Aliases when resolving Types.
• Exclude .elixir_ls directory when configuring new Projects. If the .elixir_ls directory is included the .beam it produces can interfere with normal StubIndex.
• Check if Internal Erlang SDK home path exists for SDK for New Project.
• Stop prependingQualifiers at EEx tags.

Installation Instructions

How to safely, simply, and securely add magic link login to your Phoenix app! phx.gen.auth provides the tools to make it quick and easy

https://johnelmlabs.com/posts/magic-link-auth/

Someone in my Testing LiveView course recently asked,

When would you use assert_redirected instead of assert_redirect?

Just by looking at the helpers, you might think we want to use assert_redirected. But I always prefer using assert_redirect.

Here’s why 👇

https://www.germanvelasco.com/blog/prefer-assert-redirect-over-assert-redirected

• Amazon Discount Code: 15ELIXIR (valid until July 31)
• Link: https://packt.link/sEaa3

Quick snippet from the “Preface”:

The goal is to demystify the aforementioned Phoenix magic by breaking it down into components and designing/building them from the ground up, all while testing their expected behaviors.

https://github.com/lubien/single-file-phoenix-static/blob/main/lib/mix/tasks/generate_static.ex

Copy and past under lib/mix/tasks/generate_static.ex

https://dev.to/lubien/where-are-all-these-points-coming-from-758

Topics: creating models and contexts from scratch, starting with Ecto query, first glance at IEx.

I always knew that Elixir had some optional syntax, but I didn’t realize how prevalent it was!

José Valim shared a new guide on Elixir’s optional syntax. And I thought it was really cool!

So, I created a short video to share an example. Hope you like it!

👀 https://www.elixirstreams.com/tips/elixir-optional-syntax

In episode 166 we’ll build an application to fetch timezones from latitude/longitude coordinates using TzWorld.

https://elixircasts.io/timezones-with-tzworld

🚀 Ever wondered what it takes to transform your idea into a fully functioning digital product? 📱💡 We’re thrilled to share our latest article “From Idea to App: The Ultimate Guide to Digital Product Development.”

This comprehensive guide takes you through each stage of the product development process. Whether you’re a seasoned developer or a bright-eyed entrepreneur, you should take a look. ✨ https://curiosum.com/blog/from-idea-to-app-the-ultimate-guide-to-digital-product-development

#DigitalProductDevelopment #AppDevelopment #TechGuide #Entrepreneurship

https://www.elixir-tools.dev/news/introducing-next-ls-and-an-elixir-tools-update/