[GitHub] piiswrong commented on issue #10347: [MXNET-257] Do not copy when casting as same type

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piiswrong commented on issue #10347: [MXNET-257] Do not copy when casting as 
same type
URL: https://github.com/apache/incubator-mxnet/pull/10347#issuecomment-377645910
 
 
   Numpy always copies.
   ```
   >>> import numpy as np
   >>> a = np.zeros((10,))
   >>> c = a.astype(a.dtype)
   >>> a[0] = 1
   >>> a
   array([ 1.,  0.,  0.,  0.,  0.,  0.,  0.,  0.,  0.,  0.])
   >>> c
   array([ 0.,  0.,  0.,  0.,  0.,  0.,  0.,  0.,  0.,  0.])
   ```

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