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Meng zhang and I are preparing examples for MONAI webinar to show all kinds of MONAI datasets, realized that the GridPatchDataset can be enhanced as we already have the IterableDataset now and we can easily add support for iterable data source now, which is marked TODO so far:
https://github.com/Project-MONAI/MONAI/blob/dev/monai/data/grid_dataset.py#L142