Node.js v17.0.0, the latest major version of the popular JavaScript runtime, has just been released. It supersedes v16 in the Current release line of the runtime. V16 is now in line to be promoted to the long-term support (LTS) channel on October 26, 2021, as it’s an even-numbered release. Despite being a relatively minor update, this release brings several refinements to the runtime, including more promisified APIs, JavaScript engine upgrades, and OpenSSL 3.0 support.
Welcome back to this third part of our four-part series on metaprogramming in Elixir. Previously, we established the underlying behavior of macros. Now we will dive into the various applications of macros in Elixir using open-source Elixir libraries. Let’s go!
Imagine the following hypothetical scenario: in a rental property management system, Employee A starts editing contact info for Rental X, adding some extra phone numbers. Around the same time, Employee B notices a typo in the contact info for exactly that Rental X and performs an update. A couple of minutes later, Employee A updates Rental X’s contact info with the new phone numbers, and … the update fixing the typo is now gone! That’s definitely not great!
Docker is a software platform that enables packaging an application into containers. These containers represent isolated environments that provide everything necessary to run the application. Dockerizing an application refers to packaging it in a Docker image to run in one or more containers. Dockerizing an application involves specifying everything needed to run the application in a Dockerfile and then using the file to build a specialized Docker image that can be shared to multiple machines.
The LiveView framework supports all of the most common features that Single-Page Apps must offer their users, including multipart uploads. In fact, LiveView can give us highly interactive file uploads, right out of the box. In this post, we’ll add a file upload feature to an existing Phoenix LiveView application. Along the way, you’ll learn how to use LiveView to display upload progress and feedback while editing and saving uploaded files.
Welcome back to part two of this series on metaprogramming in Elixir. In part one, we introduced metaprogramming and gave a brief overview of macros. In this part, we will explore the inner workings and behaviors of macros in more depth. As discussed in the previous post, macros are compile-time constructs in Elixir. So, before diving into how macros work, it is important to understand where macros lie within Elixir’s compilation process.
