Trait Nullability 

pub trait Nullability: Sealed {
    type Item<T>;
    type Collection<T, Buffer: BufferType>;

    const NULLABLE: bool;
}

Nullability trait for nullable and non-nullable type constructors

Required Associated Constants

const NULLABLE: bool

true iff this is Nullable.

Required Associated Types

type Item<T>

Constructor for nullable and non-nullable items.

Generic over an item T.

type Collection<T, Buffer: BufferType>

Constructor for nullable and non-nullable collections.

Generic over a collection T and a BufferType.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors

impl Nullability for NonNullable

const NULLABLE: bool = false

type Item<T> = T

type Collection<T, Buffer: BufferType> = T

impl Nullability for Nullable

const NULLABLE: bool = true

type Item<T> = Option<T>

type Collection<T, Buffer: BufferType> = Validity<T, Buffer>