haojin2 commented on a change in pull request #17624: [Numpy] add ediff1d
URL: https://github.com/apache/incubator-mxnet/pull/17624#discussion_r381825160
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File path: python/mxnet/ndarray/numpy/_op.py
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@@ -6758,6 +6758,67 @@ def diff(a, n=1, axis=-1, prepend=None, append=None):
# pylint: disable=redefin
return _npi.diff(a, n=n, axis=axis)
+@set_module('mxnet.ndarray.numpy')
+def ediff1d(ary, to_end=None, to_begin=None):
+ """
+ The differences between consecutive elements of an array.
+
+ Parameters
+ ----------
+ ary : ndarray
+ If necessary, will be flattened before the differences are taken.
+ to_end : ndarray or scalar, optional
+ Number(s) to append at the end of the returned differences.
+ to_begin : ndarray or scalar, optional
+ Number(s) to prepend at the beginning of the returned differences.
+
+ Returns
+ -------
+ ediff1d : ndarray
+ The differences. Loosely, this is ``ary.flat[1:] - ary.flat[:-1]``.
+
+ See Also
+ --------
+ diff, gradient
Review comment:
get rid of this section in all wrappers.
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