How to test in Elixir using Dependency Injection with ExUnit? — In functional programming, dependency injection is a design pattern when a function receives another function it depends on. In a regular code, it is introduced for loose coupling to achieve inversion of control. …

Most useful iex tips and tricks for everyday development — When you install Elixir, you will have three new executables available in your environment: iex, elixir, and elixirc. iex stands for and opens Elixir’s interactive shell (aka REPL), which we’ll discuss in this article. REPL

How to format, structure and keep your Elixir code consistent. — At the time of writing this article, I’ve been working with Elixir for 8 years so far. Over this period, I noticed a couple of practices that improve code readability, which I’d like to share with you again. This is the 3rd part of the series about Elixir styleguide and…

Surprising anonymous functions usage in Elixir you don’t know. — It’s a common practice in Elixir to use anonymous functions. They have no name and can be created using fn keyword with optional arguments: fn argument -> body end Anonymous functions are terminated with the end keyword, as you can see above. You can either invoke them dynamically or assign…

Elixir testing library style guide — In my recent article about Elixir styleguide, I presented an opinionated approach to formatting and structuring the entire codebase. It was very well received, and many readers suggested I should write a similar blog post with a focus on ExUnit and testing in Elixir this time. Let’s discuss then what…

The most important features behind effective leaders. — If you read books, listen to podcasts or watch videos about leadership, you will find various definitions of what leadership exactly is. Some of them are very high-level, sometimes even telling you nothing specific, but there are also very practical statements that aptly describe the entire concept. …

How to format, structure and keep your Elixir code consistent. — 5 best practices in Elixir syntax to improve the readability of your codebase. Almost every programming language has a style guide introduced by either its creators or the developers working with it. Such a style guide is a set of rules, conventions, and principles which keep code consistent across projects. What is more, it helps to understand the codebase, and lets you quickly…

What are the building blocks of Blockchain? — Blockchain is definitely a buzzword these days Some say the entire term is over-hyped. Why? Because “blockchain technology” abstracts real, specific technical innovations into a generalized phrase. It suggests a vague design pattern, but almost nothing is ever offered in the way of real design specifics. …

How to keep Elixir deps up to date? — What are dependencies? Just like it sounds — a dependency is some external code that your application depends on. You usually don’t want to implement it by yourself, and you probably need it to provide some additional functionality for your project. You save your time on coding something you really need. Furthermore, you…