Exploration of use and __using__ Macros in Elixir

The article explores the `use` and `__using__` constructs in Elixir, emphasizing their role in macro-based metaprogramming. It explains how `use GenServer` works to define reusable code. The author, Hector Perez, illustrates these concepts through multiple examples, including the creation of a reusable behavior using `__using__` and its application in different modules. Additionally, the article provides a practical demonstration by building a turn-based game framework and implementing a Number Guessing Game on top of it. The detailed code snippets and explanations help in understanding the injection of code at compile time and customizing functionalities for various uses.