[Numpy-discussion] code review request: masked dtype transfers

[Mark Wiebe]

I've just made pull request 105:

https://github.com/numpy/numpy/pull/105

This adds public API PyArray_MaskedCopyInto and PyArray_MaskedMoveInto,
which behave analogously to the corresponding unmasked functions. To expose
this with a reasonable interface, I added a function np.copyto, which takes
a 'where=' parameter just like the element-wise ufuncs.

One thing which needs discussion is that I've flagged 'putmask' and
PyArray_PutMask as deprecated, because 'copyto' PyArray_MaskedMoveInto
handle what those functions do but in a more flexible fashion. If there are
any objections to deprecating 'putmask' and PyArray_PutMask, please speak
up!

Thanks,
Mark
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