[Numpy-discussion] Shouldn't all in-place operations simply return self?

Thouis (Ray) Jones thouis@gmail....
Thu Jan 17 16:13:44 CST 2013

On Thu, Jan 17, 2013 at 10:27 AM, Charles R Harris
<charlesr.harris@gmail.com> wrote:
> On Wed, Jan 16, 2013 at 5:11 PM, eat <e.antero.tammi@gmail.com> wrote:
>> Hi,
>> In a recent thread
>> http://article.gmane.org/gmane.comp.python.numeric.general/52772 it was
>> proposed that .fill(.) should return self as an alternative for a trivial
>> two-liner.
>> I'm raising now the question: what if all in-place operations indeed could
>> return self? How bad this would be? A 'strong' counter argument may be found
>> at http://mail.python.org/pipermail/python-dev/2003-October/038855.html.
>> But anyway, at least for me. it would be much more straightforward to
>> implement simple mini dsl's
>> (http://en.wikipedia.org/wiki/Domain-specific_language) a much more
>> straightforward manner.
>> What do you think?
> I've read Guido about why he didn't like inplace operations returning self
> and found him convincing for a while. And then I listened to other folks
> express a preference for the freight train style and found them convincing
> also. I think it comes down to a preference for one style over another and I
> go back and forth myself. If I had to vote, I'd go for returning self, but
> I'm not sure it's worth breaking python conventions to do so.
> Chuck

I'm -1 on breaking with Python convention without very good reasons.


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