Struct BatchDataLoader 

pub struct BatchDataLoader<I, O> { /* private fields */ }

A data loader that can be used to iterate over a dataset in batches.

Implementations

impl<I, O> BatchDataLoader<I, O>

pub fn new( strategy: Box<dyn BatchStrategy<I>>, dataset: Arc<dyn Dataset<I>>, batcher: Arc<dyn Batcher<I, O>>, device: Device, rng: Option<StdRng>, ) -> BatchDataLoader<I, O>

Creates a new batch data loader.

Arguments

• strategy - The batch strategy.
• dataset - The dataset.
• batcher - The batcher.
• device - The device to use when loading a batch.
• rng - The rng determining if the dataset is shuffled each time a dataloader iterator is created.

Returns

The batch data loader.

Trait Implementations

impl<I, O> Clone for BatchDataLoader<I, O>

fn clone(&self) -> BatchDataLoader<I, O>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<I, O> DataLoader<O> for BatchDataLoader<I, O>

where I: Send + Sync + Clone + 'static, O: Send + 'static,

fn iter<'a>( &'a self, ) -> Box<dyn DataLoaderIterator<O, Item = Result<O, DatasetError>> + 'a>

Returns a boxed iterator to iterate over the data loader.

fn num_items(&self) -> usize

The number of items (not the number of batches nor the number of iterations), corresponding to the items_total of the progress returned by the iterator.

fn to_device(&self, device: &Device) -> Arc<dyn DataLoader<O>>

Move the data loader to the given device, ensuring the batches are assigned to the correct device.

fn slice(&self, start: usize, end: usize) -> Arc<dyn DataLoader<O>>

Returns a new data loader containing a subset of the data.