ViewHandle

Struct ViewHandle 

Source
pub struct ViewHandle<T> { /* private fields */ }
Expand description

A handle to a view that provides get/watch operations.

All views return collections (Vec). Use .first() on the result if you need a single item from views with a take limit.

Implementations§

Source§

impl<T> ViewHandle<T>
where T: Serialize + DeserializeOwned + Clone + Send + Sync + 'static,

Source

pub async fn get(&self) -> Vec<T>

Get all items from this view.

For views with a take limit defined in the stack, this returns up to that many items. Use .first() on the result if you need a single item.

Source

pub fn watch(&self) -> WatchBuilder<T>
where T: Unpin,

Watch for updates to this view. Chain .take(n) to limit results.

Source

pub fn watch_keys(&self, keys: &[&str]) -> WatchBuilder<T>
where T: Unpin,

Watch for updates filtered to specific keys.

Auto Trait Implementations§

§

impl<T> Freeze for ViewHandle<T>

§

impl<T> !RefUnwindSafe for ViewHandle<T>

§

impl<T> Send for ViewHandle<T>
where T: Send,

§

impl<T> Sync for ViewHandle<T>
where T: Sync,

§

impl<T> Unpin for ViewHandle<T>
where T: Unpin,

§

impl<T> !UnwindSafe for ViewHandle<T>

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> Instrument for T

Source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> Same for T

Source§

type Output = T

Should always be Self
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

Source§

fn vzip(self) -> V

Source§

impl<T> WithSubscriber for T

Source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more