Trait OptionMetaDerefExt 

pub trait OptionMetaDerefExt<T> {
    // Required methods
    fn value_as_ref(&self) -> Option<&T>;
    fn value_as_deref(&self) -> Option<&<T as Deref>::Target>
       where T: Deref;
}

Extension trait for Option<Meta<T>> to get references to the inner value.

Required Methods

fn value_as_ref(&self) -> Option<&T>

Get the inner value by reference if present.

fn value_as_deref(&self) -> Option<&<T as Deref>::Target>

where T: Deref,

Get the inner value as its Deref target if present.

Dyn Compatibility

This trait is dyn compatible.

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

Implementations on Foreign Types

impl<T> OptionMetaDerefExt<T> for Option<&Meta<T>>

fn value_as_ref(&self) -> Option<&T>

fn value_as_deref(&self) -> Option<&<T as Deref>::Target>

where T: Deref,

impl<T> OptionMetaDerefExt<T> for Option<Meta<T>>

fn value_as_ref(&self) -> Option<&T>

fn value_as_deref(&self) -> Option<&<T as Deref>::Target>

where T: Deref,

Implementors