A bitfields crate.
```rust use superbitty::{bitfields, BitFieldCompatible};
pub enum Enum { A, B, C, D, }
pub struct Rest(pub u8);
bitfields! { pub struct Bitfields : u8 { pub e: Enum, pub r: Rest, } }
fn main() { let mut instance = Bitfields::new(Enum::B, Rest(0b010)); asserteq!(instance.e(), Enum::B); instance.setr(Rest(0b101)); assert_eq!(instance.r().0, 0b101); } ```