Struct sycamore_reactive::ReactiveScopeWeak

pub struct ReactiveScopeWeak(_);

A weak reference to a ReactiveScope. This can be created by calling ReactiveScope::downgrade.

It is also possible to have a ReactiveScopeWeak that points to nowhere. This can be created by using Default::default.

Implementations

impl ReactiveScopeWeak

pub fn extend<U>(&self, f: impl FnOnce() -> U) -> Option<U>

Runs the passed callback in the reactive scope pointed to by this handle.

If the scope has already been destroyed, the callback is not run and None is returned.

pub async fn extend_future<U>(&self, f: impl Future<Output = U>) -> Option<U>

Runs the passed future in the reactive scope pointed to by this handle.

If the scope has already been destroyed, the callback is not run and None is returned.

pub fn is_valid(&self) -> bool

Returns true if the ReactiveScope pointed to by the weak reference is still valid. Returns false otherwise.

Trait Implementations

impl Clone for ReactiveScopeWeak

fn clone(&self) -> ReactiveScopeWeak

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Default for ReactiveScopeWeak

fn default() -> ReactiveScopeWeak

Returns the “default value” for a type.