Strategies for Writing Assertive and Idiomatic Elixir Code

In the article, José Valim outlines several strategies for writing assertive and idiomatic code in Elixir. He explains how functional languages, particularly Elixir, are well-suited for writing assertive code and discusses common anti-patterns that developers might encounter. Valim provides detailed examples and refactored code snippets to demonstrate the correct use of features such as pattern matching, Elixir protocols for polymorphism, and both strict and dynamic access to maps and structs. The goal of assertive coding is to produce faster, more concise, and maintainable code that accurately handles expected scenarios and effectively deals with edge cases.