zhanghang1989 opened a new issue #12623: Feature Request NDArray.has_nan() method URL: https://github.com/apache/incubator-mxnet/issues/12623 `ndarray.has_nan(NDArray)` and its convenient form `NDArray.has_nan()`, which return `True` if there is `nan` in the data else return `False`. This is very helpful in debugging. Optimally has an option to output the per location prediction `ndarray.has_nan(x, gather=True)`, when `gather=False`, it should output a binary NDArray with the same shape as `x` and each location predicts the corresponding data is `nan` or not.
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