Another thing: Why are unused variables outright not allowed for a compiled language? Not a warning or anything, you actually can’t compile if you have an unused variable anywhere in your project. A scripting language I can understand as that would actually impact performance, but all unused variables are stripped out by every decent compile-time optimizer.

This really throws a monkey wrench in the “write part of a solution and then compile it to test what you have so far” approach that probably most people use.