Function mapAsync

tfjs-data/src/dataset.ts:295–301

* Maps this dataset through an async 1-to-1 transform. * * ```js * const a = * tf.data.array([1, 2, 3]).mapAsync(x => new Promise(function(resolve){ * setTimeout(() => { * resolve(x * x); * }, Math.random()*1000 + 500); * })); * console.log(await a.toArray());

(transform: (value: T) => Promise<O>)

   * @doc {heading: 'Data', subheading: 'Classes'}
   */
  mapAsync<O extends tf.TensorContainer>(transform: (value: T) => Promise<O>):
      Dataset<O> {
    const base = this;
    return datasetFromIteratorFn(async () => {
      return (await base.iterator()).mapAsync(transform);
    }, this.size);
  }

  /**
   *  Creates a `Dataset` that prefetches elements from this dataset.