Trait ChangeHandlerWithSignalNext 

pub trait ChangeHandlerWithSignalNext
where
    Self: FnMut(QueryResult, Box<dyn SignalNext>) + 'static + Send + Sync,
{ }

An alias for FnMut(QueryResult, Box<dyn SignalNext>) + 'static + Send + Sync. A change handler is called whenever an active store observer receives new results.

Call the provided SignalNext function to signal that the handler is ready to receive the next callback from the store observer. See SignalNext for how this mechanism handles backpressure and collapses pending updates into at most one callback while delivery is paused.

Implementors

impl<__: ?Sized> ChangeHandlerWithSignalNext for __

where Self: FnMut(QueryResult, Box<dyn SignalNext>) + 'static + Send + Sync,