Trait Noned

pub trait Noned {
    // Required methods
    fn is_none(&self) -> bool;
    fn get_none() -> Self;
}

A trait whose implementation for any type T allows the use of Optioned<T> where T is bound by both Sized and Copy.

Required Methods

fn is_none(&self) -> bool

Returns true if the contained value is the declared None for T, false otherwise.

fn get_none() -> Self

Returns the declared None value for T.

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 Noned for char

fn is_none(&self) -> bool

fn get_none() -> char

impl Noned for f32

fn is_none(&self) -> bool

fn get_none() -> f32

impl Noned for f64

fn is_none(&self) -> bool

fn get_none() -> f64

impl Noned for i8

fn is_none(&self) -> bool

fn get_none() -> i8

impl Noned for i16

fn is_none(&self) -> bool

fn get_none() -> i16

impl Noned for i32

fn is_none(&self) -> bool

fn get_none() -> i32

impl Noned for i64

fn is_none(&self) -> bool

fn get_none() -> i64

impl Noned for isize

fn is_none(&self) -> bool

fn get_none() -> isize

impl Noned for u8

fn is_none(&self) -> bool

fn get_none() -> u8

impl Noned for u16

fn is_none(&self) -> bool

fn get_none() -> u16

impl Noned for u32

fn is_none(&self) -> bool

fn get_none() -> u32

impl Noned for u64

fn is_none(&self) -> bool

fn get_none() -> u64

impl Noned for usize

fn is_none(&self) -> bool

fn get_none() -> usize

Implementors