Trait Sentinel

pub trait Sentinel: Eq {
    const SENTINEL: Self;
}

Implemented for types which has a sentinel value.

Required Associated Constants

const SENTINEL: Self

Obtains the sentinel value.

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 Sentinel for i8

const SENTINEL: Self = 0i8

impl Sentinel for i16

const SENTINEL: Self = 0i16

impl Sentinel for i32

const SENTINEL: Self = 0i32

impl Sentinel for i64

const SENTINEL: Self = 0i64

impl Sentinel for i128

const SENTINEL: Self = 0i128

impl Sentinel for isize

const SENTINEL: Self = 0isize

impl Sentinel for u8

const SENTINEL: Self = 0u8

impl Sentinel for u16

const SENTINEL: Self = 0u16

impl Sentinel for u32

const SENTINEL: Self = 0u32

impl Sentinel for u64

const SENTINEL: Self = 0u64

impl Sentinel for u128

const SENTINEL: Self = 0u128

impl Sentinel for usize

const SENTINEL: Self = 0usize

impl<T> Sentinel for *const T

const SENTINEL: Self

impl<T> Sentinel for *mut T

const SENTINEL: Self

impl<T: Eq> Sentinel for Option<T>

const SENTINEL: Self = None

Implementors