The BitAndAssign trait enables the &= operator for data types that implement it.

Implementing BitAndAssign looks like this:

pub enum BitExample {
 Yes,
 No,
}

impl BitAndAssign for BitExample {
    fn bitand_assign(&mut self, other: BitExample) {
        *self = match (&self, other) {
            (BitExample::Yes, BitExample::Yes) => BitExample::Yes,
            (BitExample::No, BitExample::Yes) => BitExample::No,
            (BitExample::Yes, BitExample::No) => BitExample::No,

            (BitExample::No, BitExample::No) => BitExample::No,
        };
    }
}