Struct differential_dataflow::trace::implementations::hash::HashValBuilder

pub struct HashValBuilder<K: HashOrdered, V: Ord, T: Ord + Lattice, R: Diff> { /* fields omitted */ }

A builder for creating layers from unsorted update tuples.

Trait Implementations

impl<K, V, T, R> Builder<K, V, T, R, Rc<HashValBatch<K, V, T, R>>> for HashValBuilder<K, V, T, R> where
    K: Clone + Default + HashOrdered + 'static,
    V: Ord + Clone + 'static,
    T: Lattice + Ord + Clone + Default + 'static,
    R: Diff, 

fn new() -> Self

Allocates an empty builder.

fn with_capacity(cap: usize) -> Self

Allocates an empty builder with some capacity.

fn push(&mut self, (key, val, time, diff): (K, V, T, R))

Adds an element to the batch.

fn done(
    self,
    lower: &[T],
    upper: &[T],
    since: &[T]
) -> Rc<HashValBatch<K, V, T, R>>

Completes building and returns the batch.

fn extend<I: Iterator<Item = (K, V, T, R)>>(&mut self, iter: I)

Adds an ordered sequence of elements to the batch.