Type-Level Programming

Type-level programming is a way for programmers to use types—categories that describe data—to enforce rules and ensure correctness at a higher level of the code. Instead of only working with data values, they manipulate types themselves to catch errors early, improve safety, and make code more expressive. Think of it like defining strict templates or blueprints that guide how data should behave, allowing the computer to verify proper usage during compilation, rather than after the program runs. This results in more reliable, maintainable software by catching issues before deployment.