I am a python user, but I _really_ like that .inverse!() notation indicating that the object itself is being mutated. It's concise and consistent. Sometimes p

I am a python user, but I _really_ like that .inverse!() notation indicating that the object itself is being mutated. It's concise and consistent. Sometimes punctuation in names is exactly what you need. Same with ? for predicates. I'll take even? over evenp any day of the week.