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Re: Immutability and Python

References <CAF_E5JZVij+DTNNH=kMHVa1+GM6g80MpQBY1N4wc-a46bmGLsw@mail.gmail.com> <771101937.3475467.1351525139677.JavaMail.root@sequans.com>
Date 2012-10-29 15:44 +0000
Subject Re: Immutability and Python
From andrea crotti <andrea.crotti.0@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.3020.1351525475.27098.python-list@python.org> (permalink)

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2012/10/29 Jean-Michel Pichavant <jeanmichel@sequans.com>:
>
> "return NumWrapper(self.number + 1) "
>
> still returns a(nother) mutable object.
>
> So what's the point of all this ?
>
> JM
>

Well sure but it doesn't modify the first object, just creates a new
one.  There are in general good reasons to do that, for example I can
then compose things nicely:

num.increment().increment()

or I can parallelize operations safely not caring about the order of
operations.

But while I do this all the time with more functional languages, I
don't tend to do exactly the same in Python, because I have the
impression that is not worth, but maybe I'm wrong..

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Re: Immutability and Python andrea crotti <andrea.crotti.0@gmail.com> - 2012-10-29 15:44 +0000

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