[Numpy-discussion] The date/time dtype and the casting issue
Ivan Vilata i Balaguer
Tue Jul 29 13:38:13 CDT 2008
David Huard (el 2008-07-29 a les 12:31:54 -0400) va dir::
> Silent casting is often a source of bugs and I appreciate the strict
> rules you want to enforce. However, I think there should be a simpler
> mechanism for operations between different types than creating a copy
> of a variable with the correct type.
> My suggestion is to have a dtype argument for methods such as add and subs:
> >>> numpy.ones(3, dtype="t8[Y]").add(numpy.zeros(3, dtype="t8[fs]"),
> This way, `implicit` operations (+,-) enforce strict rules, and
> `explicit` operations (add, subs) let's you do want you want at your
> own risk.
Umm, that looks like a big change (or addition) to the NumPy interface.
I think similar "include a dtype argument for method X" issues hava been
discussed before in the list. However, given the big change of adding
the new explicit operation methods I think your proposal falls beyond
the scope of the project being discussed.
However, since yours isn't necessarily a time-related proposal, you may
ask what people think of it in a separate thread.
Ivan Vilata i Balaguer @ Intellectual Monopoly hinders Innovation! @
http://www.selidor.net/ @ http://www.nosoftwarepatents.com/ @
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