Method try_from

crates/primitives/src/attr.rs:276–278

(v: u8)

impl TryFrom<u8> for Constraints {
    type Error = ();
    fn try_from(v: u8) -> Result<Self, Self::Error> {
        ColumnAttribute::from_bits(v).ok_or(()).map(Self::new)
    }
}

impl TryFrom<ColumnAttribute> for Constraints {