Skip to main content

broadcast

differential_dataflow::algorithms::prefix_sum

Function broadcast 

Source 
pub fn broadcast<'scope, T, K, D, F>(
    ranges: VecCollection<'scope, T, ((usize, usize, K), D)>,
    queries: VecCollection<'scope, T, (usize, K)>,
    zero: D,
    combine: F,
) -> VecCollection<'scope, T, ((usize, K), D)>
where
    T: Timestamp + Lattice,
    K: ExchangeData + Hash,
    D: ExchangeData + Hash,
    F: Fn(&K, &D, &D) -> D + 'static,
Expand description

Produces the accumulated values at each of the usize locations in queries.