Struct WeakBackend 

pub struct WeakBackend { /* private fields */ }

A weak handle to a Backend

This handle behaves similarly to Weak, and can be used to keep access to the backend without actually preventing it from being dropped.

Implementations

impl WeakBackend

pub fn upgrade(&self) -> Option<Backend>

Try to upgrade this weak handle to a Backend

Returns None if the associated backend was already dropped.

Trait Implementations

impl Clone for WeakBackend

fn clone(&self) -> WeakBackend

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for WeakBackend

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.