Trait collections::enum_set::CLike

pub trait CLike {
    fn to_usize(&self) -> usize;
    fn from_usize(_: usize) -> Self;
}

An interface for casting C-like enum to usize and back. A typically implementation is as below.

#[repr(usize)]
enum Foo {
    A, B, C
}

impl CLike for Foo {
    fn to_usize(&self) -> usize {
        *self as usize
    }

    fn from_usize(v: usize) -> Foo {
        unsafe { mem::transmute(v) }
    }
}

Required Methods

Implementors