Struct Chunk 

pub struct Chunk<I, T> { /* private fields */ }

Chunk of items.

This data type represents a collection of items that are grouped together for processing. Unlike Delta, a Chunk contains items that are all present (i.e., not optional). Chunks are used to process a batch of items as a single unit, e.g., for windowing or pagination.

Note that chunks are assumed to always only contain unique items, meaning there are no two items with the same identifier in a chunk. This invariant must be checked with unit tests (which we provide for our operators), but is not enforced at runtime for performance reasons.

Examples

use zrx_scheduler::effect::Item;
use zrx_stream::value::Chunk;

// Create chunk of items
let chunk = Chunk::from([
    Item::new("a", 1),
    Item::new("b", 2),
    Item::new("c", 3),
]);

Implementations

impl<I, T> Chunk<I, T>

pub fn iter(&self) -> Iter<'_, Item<I, T>>

Creates an iterator over the chunk of items.

Examples

use zrx_scheduler::effect::Item;
use zrx_stream::value::Chunk;

// Create chunk of items
let chunk = Chunk::from([
    Item::new("a", 1),
    Item::new("b", 2),
    Item::new("c", 3),
]);

// Create iterator over items
for item in chunk.iter() {
    println!("{item:?}");
}

Trait Implementations

impl<I: Clone, T: Clone> Clone for Chunk<I, T>

fn clone(&self) -> Chunk<I, T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<I: Debug, T: Debug> Debug for Chunk<I, T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<I, T> Default for Chunk<I, T>

fn default() -> Self

Creates an empty chunk of items.

Examples

use zrx_stream::value::Chunk;

// Create empty chunk of items
let chunk = Chunk::default();

impl<I, T, U, const N: usize> From<[U; N]> for Chunk<I, T>

where U: Into<Item<I, T>>,

fn from(value: [U; N]) -> Self

Creates a chunk of items from a slice of items.

Examples

use zrx_scheduler::effect::Item;
use zrx_stream::value::Chunk;

// Create chunk of items
let chunk = Chunk::from([
    Item::new("a", 1),
    Item::new("b", 2),
    Item::new("c", 3),
]);

impl<I, T, U> FromIterator<U> for Chunk<I, T>

where U: Into<Item<I, T>>,

fn from_iter<V>(iter: V) -> Self

where V: IntoIterator<Item = U>,

Creates a chunk of items from an iterator.

Examples

use zrx_scheduler::effect::Item;
use zrx_stream::value::Chunk;

// Create chunk of items
let chunk = Chunk::from_iter([
    Item::new("a", 1),
    Item::new("b", 2),
    Item::new("c", 3),
]);

impl<'a, I, T> IntoIterator for &'a Chunk<I, T>

fn into_iter(self) -> Self::IntoIter

Creates an iterator over the chunk of items.

Examples

use zrx_scheduler::effect::Item;
use zrx_stream::value::Chunk;

// Create chunk of items
let chunk = Chunk::from([
    Item::new("a", 1),
    Item::new("b", 2),
    Item::new("c", 3),
]);

// Create iterator over items
for item in &chunk {
    println!("{item:?}");
}

type Item = &'a Item<I, T>

The type of the elements being iterated over.

type IntoIter = Iter<'a, Item<I, T>>

Which kind of iterator are we turning this into?

impl<I, T> IntoIterator for Chunk<I, T>

fn into_iter(self) -> Self::IntoIter

Creates an iterator over the chunk of items.

Examples

use zrx_scheduler::effect::Item;
use zrx_stream::value::Chunk;

// Create chunk of items
let chunk = Chunk::from([
    Item::new("a", 1),
    Item::new("b", 2),
    Item::new("c", 3),
]);

// Create iterator over items
for item in chunk.iter() {
    println!("{item:?}");
}

type Item = Item<I, T>

The type of the elements being iterated over.

type IntoIter = IntoIter<<Chunk<I, T> as IntoIterator>::Item>

Which kind of iterator are we turning this into?

impl<I: PartialEq, T: PartialEq> PartialEq for Chunk<I, T>

fn eq(&self, other: &Chunk<I, T>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<I: Eq, T: Eq> Eq for Chunk<I, T>

impl<I, T> StructuralPartialEq for Chunk<I, T>

impl<I, T> Value for Chunk<I, T>

where I: Id, T: Value,