Trait Idx

pub unsafe trait Idx:
    Copy
    + Ord
    + Hash
where
    Self: Debug,
{
    // Required methods
    fn as_usize(self) -> usize;
    fn from_usize(i: usize) -> Option<Self>;
    fn zero() -> Self;
    fn add(self, increment: usize) -> Self;
    fn sub(self, decrement: usize) -> Self;
}

Unsigned integers able to be used as a trusted index.

Required Methods

fn as_usize(self) -> usize

fn from_usize(i: usize) -> Option<Self>

fn zero() -> Self

fn add(self, increment: usize) -> Self

fn sub(self, decrement: usize) -> Self

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 Idx for u8

fn as_usize(self) -> usize

fn from_usize(i: usize) -> Option<Self>

fn zero() -> Self

fn add(self, increment: usize) -> Self

fn sub(self, decrement: usize) -> Self

impl Idx for u16

fn as_usize(self) -> usize

fn from_usize(i: usize) -> Option<Self>

fn zero() -> Self

fn add(self, increment: usize) -> Self

fn sub(self, decrement: usize) -> Self

impl Idx for u32

fn as_usize(self) -> usize

fn from_usize(i: usize) -> Option<Self>

fn zero() -> Self

fn add(self, increment: usize) -> Self

fn sub(self, decrement: usize) -> Self

impl Idx for usize

fn as_usize(self) -> usize

fn from_usize(i: usize) -> Option<Self>

fn zero() -> Self

fn add(self, increment: usize) -> Self

fn sub(self, decrement: usize) -> Self

Implementors