Struct drying_paint::Watcher

pub struct Watcher<T: ?Sized> { /* fields omitted */ }

Watcher is a structure designed to hold some data along with associated functions which will run when watched data changes.

Methods

impl<T: WatcherInit> Watcher<T>

pub fn create(data: T) -> Self

Create a new Watcher. After creation, will run WatcherInit::init for the stored data.

impl<T: WatcherInit + ?Sized> Watcher<T>

pub fn data(&self) -> Ref<T>

Get an immutable reference to the data stored in this Watcher. Note that this follows the same rules as RefCell, and may panic if the runtime borrow checker detects and invalid borrow.

pub fn data_mut(&mut self) -> RefMut<T>

Get an mutable reference to the data stored in this Watcher. Note that this follows the same rules as RefCell, and may panic if the runtime borrow checker detects and invalid borrow.

impl<T: WatcherInit + Default> Watcher<T>

pub fn new() -> Self

Create a Watcher with default data. After creation, will run WatcherInit::init for the stored data.

impl<T: 'static> Watcher<T>

pub fn id(&self) -> WatcherId

Get a value representing a unique id for this watcher. This value may outlive the watcher, and will never compare equal to a value returned by the id method of a Watcher other than this one.

Trait Implementations

impl<T: WatcherInit + Clone> Clone for Watcher<T>

fn clone(&self) -> Self

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: WatcherInit + Default> Default for Watcher<T>

fn default() -> Self

Returns the "default value" for a type.