Struct suzy::watch::WatchedCell

pub struct WatchedCell<T> where
    T: ?Sized,  { /* fields omitted */ }

A Watched value which provides interior mutability. This provides correct behavior (triggering watch functions when changed) where Watched<Cell<T>> would not, and should be slightly more performant than RefCell<Watched<T>>.

Implementations

impl<T> WatchedCell<T> where
    T: ?Sized, 

pub fn get_mut(&mut self) -> &mut T

Returns a mutable reference to the watched data.

This call borrows the WatchedCell mutably (at compile-time) which guarantees that we possess the only reference.

pub fn watched(&self)

Treat this WatchedCell as watched, without fetching the actual value.

impl<T> WatchedCell<T>

pub fn new(value: T) -> WatchedCell<T>

Create a new WatchedCell

pub fn set(&self, value: T)

Sets the watched value

pub fn into_inner(self) -> T

Unwraps the WatchedCell, returning the contained value

pub fn replace(&self, value: T) -> T

Replaces the contained value and returns the previous value

impl<T> WatchedCell<T> where
    T: Copy, 

pub fn get(&self) -> T

Returns a copy of the watched value

impl<T> WatchedCell<T> where
    T: Default, 

pub fn take(&self) -> T

Takes the watched value, leaving Default::default() in its place

Trait Implementations

impl<T> Clone for WatchedCell<T> where
    T: Copy, 

pub fn clone(&self) -> WatchedCell<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Default for WatchedCell<T> where
    T: Default + ?Sized, 

pub fn default() -> WatchedCell<T>

Returns the “default value” for a type.

impl<T> From<T> for WatchedCell<T>

pub fn from(value: T) -> WatchedCell<T>

Performs the conversion.