Function prefetch

tfjs-data/src/dataset.ts:312–321

* Creates a `Dataset` that prefetches elements from this dataset. * * @param bufferSize: An integer specifying the number of elements to be * prefetched. * @returns A `Dataset`. * * @doc {heading: 'Data', subheading: 'Classes'}

(bufferSize: number)

   * @doc {heading: 'Data', subheading: 'Classes'}
   */
  prefetch(bufferSize: number): Dataset<T> {
    if (bufferSize == null) {
      throw new RangeError(
          '`Dataset.prefetch()` requires bufferSize to be specified.');
    }

    const base = this;
    return datasetFromIteratorFn(
        async () => (await base.iterator()).prefetch(bufferSize), this.size);
  }

  /**
   * Repeats this dataset `count` times.