Possibly worth pointing out to non-gophers: in `Go` it is illegal to declare an unused variable. So if you write `f, err := os.Create("/bad/path");`, and that

Possibly worth pointing out to non-gophers: in `Go` it is illegal to declare an unused variable. So if you write `f, err := os.Create("/bad/path");`, and that is the first time `err` has been declared & used in that scope, you can't just let `err` go unused or your program won't compile.