Struct Handle 

pub struct Handle<'s, T: 'static> { /* private fields */ }

A Copy accessor to one hook slot.

Unlike State it borrows the slot only for the duration of each call, so it can be stored in a struct or handed to a child component.

Implementations

impl<T: 'static> Handle<'_, T>

pub fn get(&self) -> T

where T: Clone,

Read a clone of the value.

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

Read the value through a closure.

pub fn set(&self, value: T)

Replace the value and request a repaint.

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

Mutate the value in place and request a repaint.

pub fn update_later(&self, f: impl FnOnce(&mut T) + 'static)

Queue a write for the end of the pass and request a repaint.

See State::update_later.

Trait Implementations

impl<T: 'static> Clone for Handle<'_, T>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: 'static> Copy for Handle<'_, T>