Trait Cast 

pub trait Cast: Copy + Eq {
    // Required methods
    fn cast(self) -> usize;
    fn invalid() -> Self;
}

Trait for any type that can be converted to a usize. This could actually be a hash function, but we will assume that it is fast, so I’m not calling it Hash.

Required Methods

fn cast(self) -> usize

Convert to a usize.

fn invalid() -> Self

A unique invalid value for this type. If you cannot identify an invalid value, then you don’t get to use CastSet, since we would need to store an Option<T> which would probably double the size of the set.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Cast for u8

fn cast(self) -> usize

fn invalid() -> Self

impl Cast for u16

fn cast(self) -> usize

fn invalid() -> Self

impl Cast for u32

fn cast(self) -> usize

fn invalid() -> Self

impl Cast for u64

fn cast(self) -> usize

fn invalid() -> Self

impl Cast for usize

fn cast(self) -> usize

fn invalid() -> Self

Implementors