Elm Compiler Reminders: A Powerful Tool for Maintainable Code

Elm's compiler reminders, though often overlooked, are a crucial feature for maintaining code. They trigger compiler errors when code changes necessitate simultaneous modifications elsewhere, guiding developers to make the necessary adjustments. The article uses a simple counter example to demonstrate how following compiler hints leads to robust, working code, embodying the principle of "if it compiles, it works." This "compiler-driven development" approach, coupled with type checking and exhaustiveness checks, significantly enhances maintainability. The discussion expands to cover other types of reminders, such as linter hints, and how custom rules can create context-specific reminders. Ultimately, the article stresses the importance of leveraging various reminder mechanisms in highly maintainable codebases.