Struct LocalStateWriter 

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

A background-safe LocalState mutation handle with event-loop wakeup.

Implementations

impl<T> LocalStateWriter<T>

pub fn set(&self, value: T)

Replace the value and request synchronization and redraw.

The mutation is accepted only while the captured owner is open and its revision namespace is not exhausted. The return value from Self::try_set reports publication acceptance, not wake delivery or scheduling.

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

As Self::set, reporting whether the replacement was accepted for publication. false means the captured owner is closed or the revision namespace is exhausted; no wake delivery or scheduling is implied by true.

pub fn update(&self, update: impl FnOnce(&mut T))

Mutate the value once and request synchronization and redraw.

The mutation is accepted only while the captured owner is open and its revision namespace is not exhausted. The return value from Self::try_update reports publication acceptance, not wake delivery or scheduling.

pub fn try_update(&self, update: impl FnOnce(&mut T)) -> bool

As Self::update, reporting whether the mutation was accepted for publication. false means the captured owner is closed or the revision namespace is exhausted; the callback is not invoked. true does not mean that a wake was delivered or scheduled.

Trait Implementations

impl<T> Clone for LocalStateWriter<T>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.