Function differential_dataflow::algorithms::graphs::propagate::propagate_at

pub fn propagate_at<G, N, L, F, R>(
    edges: &Collection<G, (N, N), R>, 
    nodes: &Collection<G, (N, L), R>, 
    logic: F
) -> Collection<G, (N, L), R> where
    G: Scope,
    G::Timestamp: Lattice + Ord,
    N: ExchangeData + Hash,
    R: ExchangeData + Abelian,
    R: Mul<R, Output = R>,
    R: From<i8>,
    L: ExchangeData,
    F: Fn(&L) -> u64 + Clone + 'static, 

Propagates labels forward, retaining the minimum label.

This algorithm naively propagates all labels at once, much like standard label propagation. To more carefully control the label propagation, consider propagate_core which supports a method to limit the introduction of labels.