Enum Shared

pub enum Shared {}

Represents the mutability of a shared reference, &T.

Along with Mutable, this is one of the two types that can be used as a generic mutability parameter. It is an empty type because it is always used as a generic parameter and never as a value.

Just as with &T, interior mutability types may change while behind a reference of Shared mutability.

Implementations

impl Shared

pub fn mutability() -> IsShared<Shared>

This method returns a proof for the shared-ness of Shared. Note: this method shadows <Shared as Mutability>::mutability(), which returns the same proof wrapped in MutabilityEnum::Shared. If you have access to this method (i.e. in non-generic contexts), you should not need <Shared as Mutability>::mutability().

Trait Implementations

impl Clone for Shared

fn clone(&self) -> Shared

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Mutability for Shared

fn mutability() -> MutabilityEnum<Self>

The result of this method lets you match over the mutability values to obtain a proof, which can be used to access features that are only available for one mutability.

impl Copy for Shared