Yep, and each iteration replaces the previous one. Think of each iteration as its own scope. If you want to persist a const across iterations, you'd define it

Yep, and each iteration replaces the previous one. Think of each iteration as its own scope. If you want to persist a const across iterations, you'd define it in a scope above it. You could also modify a let variable defined a parent scope. Personally I avoid doing that, but it's possible. Anything defined in an iteration though, I'd consider disposable unless it's a reference to and outer scope variable. Someone correct me if I'm wrong!