| # Copyright (c) Facebook, Inc. and its affiliates. | |
| # | |
| # This source code is licensed under the MIT license found in the | |
| # LICENSE file in the root directory of this source tree. | |
| import torch | |
| from . import BaseWrapperDataset | |
| class RollDataset(BaseWrapperDataset): | |
| def __init__(self, dataset, shifts): | |
| super().__init__(dataset) | |
| self.shifts = shifts | |
| def __getitem__(self, index): | |
| item = self.dataset[index] | |
| return torch.roll(item, self.shifts) | |