Trait optional::Noned

pub trait Noned {
    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.

Implementations on Foreign Types

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

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 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 char

fn is_none(&self) -> bool

fn get_none() -> char

Implementors