Trait Nullable 

pub trait Nullable {
    const NULL: Self;

    // Required method
    fn is_null(&self) -> bool;
}

A trait for defining nullable values.

Required Associated Constants

const NULL: Self

The null value for the type.

Required Methods

fn is_null(&self) -> bool

Returns true if the value is null. Typically, this is a comparison with the null value.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T> Nullable for Option<T>

const NULL: Self = None

fn is_null(&self) -> bool

impl<T> Nullable for *const T

const NULL: Self

fn is_null(&self) -> bool

impl<T> Nullable for *mut T

const NULL: Self

fn is_null(&self) -> bool

Implementors