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", so this trait is not object safe.

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