The article should have clarified it, but this is Rust so !A is correct (having a real boolean type, and no implicit casts to int, you don’t need a separate bit

The article should have clarified it, but this is Rust so !A is correct (having a real boolean type, and no implicit casts to int, you don’t need a separate bitwise and logical not. Conceptually, ! always does a bitwise not, which in the case of a single-bit value is also the logical not.)