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Date: Mon, 29 Oct 2012 15:44:31 +0000
Subject: Re: Immutability and Python
From: andrea crotti <andrea.crotti.0@gmail.com>
To: Jean-Michel Pichavant <jeanmichel@sequans.com>
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Xref: csiph.com comp.lang.python:32385

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..