Struct Shared 

pub struct Shared<T> { /* private fields */ }

Ref-counted shared value with change notification (UDF Shared engine subset).

Implementations

impl<T> Shared<T>

pub fn new(value: T) -> Self

pub fn with<R>(&self, f: impl FnOnce(&T) -> R) -> R

pub fn with_mut<R>(&self, f: impl FnOnce(&mut T) -> R) -> R

where T: Clone + PartialEq,

pub fn set(&self, value: T)

where T: PartialEq,

pub fn get(&self) -> T

where T: Clone,

pub fn load<S>(storage: &S, key: &str, default: T) -> Result<Self, StorageError>

where S: Storage<T>,

pub fn persist<S>(&self, storage: &S, key: &str) -> Result<(), StorageError>

where S: Storage<T>, T: Clone,

pub fn subscribe(&self) -> SharedSubscriber<T>

where T: Clone + PartialEq,

Trait Implementations

impl<T: Clone> Clone for Shared<T>

fn clone(&self) -> Shared<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.