Trait Nullable

pub trait Nullable:
    AnchorSerialize
    + AnchorDeserialize
    + PartialEq {
    const NONE: Self;

    // Provided methods
    fn is_some(&self) -> bool { ... }
    fn is_none(&self) -> bool { ... }
}

Used for Borsh types that can have a None value.

Required Associated Constants

const NONE: Self

The value that represents None.

Provided Methods

fn is_some(&self) -> bool

Indicates if the value is Some.

fn is_none(&self) -> bool

Indicates if the value is None.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl Nullable for u8

const NONE: Self = 0u8

impl Nullable for u16

const NONE: Self = 0u16

impl Nullable for u32

const NONE: Self = 0u32

impl Nullable for u64

const NONE: Self = 0u64

impl Nullable for u128

const NONE: Self = 0u128

impl Nullable for usize

const NONE: Self = 0usize

impl Nullable for Pubkey

const NONE: Self = DEFAULT_PUBKEY

Implementors