Struct differential_dataflow::trace::wrappers::filter::BatchFilter

pub struct BatchFilter<K, V, T, R, B, F> { /* fields omitted */ }

Wrapper to provide batch to nested scope.

Methods

impl<K, V, T, R, B, F> BatchFilter<K, V, T, R, B, F> where
    B: BatchReader<K, V, T, R>,
    T: Timestamp, 

pub fn make_from(batch: B, logic: F) -> Self

Makes a new batch wrapper

Trait Implementations

impl<K, V, T, R, B, F> BatchReader<K, V, T, R> for BatchFilter<K, V, T, R, B, F> where
    B: BatchReader<K, V, T, R>,
    T: Timestamp,
    F: FnMut(&K, &V) -> bool + Clone + 'static, 

type Cursor = BatchCursorFilter<K, V, T, R, B, F>

The type used to enumerate the batch's contents.

fn cursor(&self) -> Self::Cursor

Acquires a cursor to the batch's contents.

fn len(&self) -> usize

The number of updates in the batch.

fn description(&self) -> &Description<T>

Describes the times of the updates in the batch.

fn is_empty(&self) -> bool

True if the batch is empty.

fn lower(&self) -> &[T]

All times in the batch are greater or equal to an element of lower.

fn upper(&self) -> &[T]

All times in the batch are not greater or equal to any element of upper.

impl<K, V, T, R, B: Clone, F: Clone> Clone for BatchFilter<K, V, T, R, B, F>

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.