Trait Nullable 

pub trait Nullable: Delta {
    const NULL: Self;
}

A index which can contain null

Safety

fn for_all_a(a: *mut u8) {
    assert_eq!(a, <Self as Delta>::add(Self::NULL, a));
    assert_eq!(Self::NULL, <Self as Delta>::sub(a, a));
    assert_eq!(Self::NULL, <Self as Delta>::sub_unchecked(a, a));
}

Required Associated Constants

const NULL: Self

The value No change in two pointer locations,

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 Nullable for i8

const NULL: Self = 0i8

impl Nullable for i16

const NULL: Self = 0i16

impl Nullable for i32

const NULL: Self = 0i32

impl Nullable for i64

const NULL: Self = 0i64

impl Nullable for i128

const NULL: Self = 0i128

impl Nullable for isize

const NULL: Self = 0isize

Implementors