The Power of Small, Composable Functions
I've spent years refactoring messy codebases. The most common problem I see isn't lack of comments or poor naming-it's functions that try to do too much. A function that does one thing well is easy to test, debug, and reuse. But the real magic happens when you design functions that can be composed together, each one feeding into the next. This is what I call "compounding" function design.
Start with the Data Flow
Before writing a function, I ask: what data goes in, and what comes out? If the answer involves multiple unrelated transformations, I split it. For example, consider a function that fetches user data, filters active users, and formats their names:
// Bad: one function does everything
