Trait Dataset 

pub trait Dataset<I>: Send + Sync {
    // Required methods
    fn get(&self, index: usize) -> Option<I>;
    fn len(&self) -> usize;

    // Provided methods
    fn get_many(&self, indices: &[usize]) -> Option<Vec<I>> { ... }
    fn is_empty(&self) -> bool { ... }
    fn iter(&self) -> DatasetIterator<'_, I> 
       where Self: Sized { ... }
}

Available on crate features dataset and std only.

The dataset trait defines a basic collection of items with a predefined size.

Required Methods

fn get(&self, index: usize) -> Option<I>

Gets the item at the given index.

fn len(&self) -> usize

Gets the number of items in the dataset.

Provided Methods

fn get_many(&self, indices: &[usize]) -> Option<Vec<I>>

Fetch actual items in requested order, preserving repeated indices. None means at least one requested item is absent; no filler is returned. Storage-backed implementations may combine I/O without changing order.

fn is_empty(&self) -> bool

Checks if the dataset is empty.

fn iter(&self) -> DatasetIterator<'_, I>

where Self: Sized,

Returns an iterator over the dataset.

Trait Implementations

impl<I> Dataset<I> for Box<dyn Dataset<I>>

fn get(&self, index: usize) -> Option<I>

Gets the item at the given index.

fn get_many(&self, indices: &[usize]) -> Option<Vec<I>>

Fetch actual items in requested order, preserving repeated indices. None means at least one requested item is absent; no filler is returned. Storage-backed implementations may combine I/O without changing order.

fn len(&self) -> usize

Gets the number of items in the dataset.

fn is_empty(&self) -> bool

Checks if the dataset is empty.

fn iter(&self) -> DatasetIterator<'_, I>

where Self: Sized,

Returns an iterator over the dataset.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<D, I> Dataset<I> for Arc<D>

where D: Dataset<I>,

fn get(&self, index: usize) -> Option<I>

fn get_many(&self, indices: &[usize]) -> Option<Vec<I>>

fn len(&self) -> usize

impl<D, I> Dataset<I> for Box<D>

where D: Dataset<I>,

fn get(&self, index: usize) -> Option<I>

fn get_many(&self, indices: &[usize]) -> Option<Vec<I>>

fn len(&self) -> usize

impl<I> Dataset<I> for Arc<dyn Dataset<I>>

fn get(&self, index: usize) -> Option<I>

fn get_many(&self, indices: &[usize]) -> Option<Vec<I>>

fn len(&self) -> usize

impl<I> Dataset<I> for Box<dyn Dataset<I>>

fn get(&self, index: usize) -> Option<I>

fn get_many(&self, indices: &[usize]) -> Option<Vec<I>>

fn len(&self) -> usize

Implementors

impl Dataset<SpeechItem> for SpeechCommandsDataset

impl<D, I> Dataset<I> for ComposedDataset<D>

where D: Dataset<I>, I: Clone,

impl<D, I> Dataset<I> for PartialDataset<D, I>

where D: Dataset<I>, I: Clone + Send + Sync,

impl<D, I> Dataset<I> for SamplerDataset<D, I>

where D: Dataset<I>, I: Send + Sync,

impl<D, I> Dataset<I> for SelectionDataset<D, I>

where D: Dataset<I>, I: Clone + Send + Sync,

impl<D, I> Dataset<I> for ShuffledDataset<D, I>

where D: Dataset<I>, I: Clone + Send + Sync,

impl<D, I> Dataset<Vec<I>> for WindowsDataset<D, I>

where D: Dataset<I>, I: Send + Sync,

impl<D, M, I, O> Dataset<O> for MapperDataset<D, M, I>

where D: Dataset<I>, M: Mapper<I, O> + Send + Sync, I: Send + Sync, O: Send + Sync,

impl<I> Dataset<I> for InMemDataset<I>

where I: Clone + Send + Sync,

impl<I> Dataset<I> for IndexedJsonlDataset<I>

where I: DeserializeOwned,

impl<I> Dataset<I> for SqliteDataset<I>

where I: Clone + Send + Sync + DeserializeOwned,