Error handling in Elixir

In a world where we glorify fast output and moving on to the next thing, we often find ourselves thinking in happy paths only. Let's be honest, though — errors happen. And when you start thinking about properly modelling and handling them when the project is already in full swing, you are too late. Good errors can help reveal what works and what doesn't work. The Elixir error-handling system offers multiple ways to signal and deal with unhappy paths. But what are those errors and when should ...