Function differential_dataflow::capture::source::build

pub fn build<G, B, I, D, T, R>(
    scope: G, 
    source_builder: B
) -> (Box<dyn Any>, Stream<G, (D, T, R)>) where
    G: Scope<Timestamp = T>,
    B: FnOnce(SyncActivator) -> I,
    I: Iterator<Item = Message<D, T, R>> + 'static,
    D: ExchangeData + Hash,
    T: ExchangeData + Hash + Timestamp + Lattice,
    R: ExchangeData + Hash, 

Constructs a stream of updates from a source of messages.

The stream is built in the supplied scope and continues to run until the returned Box<Any> token is dropped. The source_builder argument is invoked with a SyncActivator that will re-activate the source.