Trait OptionExt 

pub trait OptionExt: Sized + Sealed {
    type T;

    // Required methods
    fn is_none_or(self, f: impl FnOnce(Self::T) -> bool) -> bool;
    fn contains<U>(&self, u: &U) -> bool
       where Self::T: PartialEq<U>;
    fn unwrap_none(self)
       where Self::T: Debug;
    fn expect_none(self, msg: &str)
       where Self::T: Debug;
}

Required Associated Types

type T

Required Methods

fn is_none_or(self, f: impl FnOnce(Self::T) -> bool) -> bool

fn contains<U>(&self, u: &U) -> bool

where Self::T: PartialEq<U>,

fn unwrap_none(self)

where Self::T: Debug,

fn expect_none(self, msg: &str)

where Self::T: Debug,

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<T> OptionExt for Option<T>

type T = T

fn is_none_or(self, f: impl FnOnce(Self::T) -> bool) -> bool

fn contains<U>(&self, u: &U) -> bool

where Self::T: PartialEq<U>,

fn unwrap_none(self)

where Self::T: Debug,

fn expect_none(self, msg: &str)

where Self::T: Debug,

Implementors