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Add size to dataset generator #8530

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Add size to dataset generator #8530

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e8091eb
Add size to dataset generator
zsoltkebel Mar 17, 2025
8e04ed1
Update docstring
zsoltkebel Mar 17, 2025
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5 changes: 4 additions & 1 deletion tfjs-data/src/readers.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -188,6 +188,8 @@ export function func<T extends TensorContainer>(
*
* @param generator A JavaScript function that returns
* a (potentially async) JavaScript iterator.
* @param size The total number of elements the generator
* is expected to return.
*
* @doc {
* heading: 'Data',
Expand All @@ -198,11 +200,12 @@ export function func<T extends TensorContainer>(
*/
export function generator<T extends TensorContainer>(
generator: () => Iterator<T> | Promise<Iterator<T>> | AsyncIterator<T>,
size: number = null,
): Dataset<T> {
return datasetFromIteratorFn(async () => {
const gen = await generator();
return iteratorFromFunction(() => gen.next());
});
}, size);
}

/**
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