Trait Nullable 

pub trait Nullable:
    PartialEq
    + Eq
    + Sized {
    const NULL: Self;

    // Provided method
    fn is_null(&self) -> bool { ... }
}

Required Associated Constants

const NULL: Self

Provided Methods

fn is_null(&self) -> bool

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl Nullable for ()

const NULL: Self = ()

Implementors

impl Nullable for SourceId

const NULL: Self

impl<T: Nullable> Nullable for BaseSpan<T>

const NULL: Self