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Message from discussion Immutability and Python
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andrea crotti  
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 More options Oct 29 2012, 11:44 am
Newsgroups: comp.lang.python
From: andrea crotti <andrea.crott...@gmail.com>
Date: Mon, 29 Oct 2012 15:44:31 +0000
Local: Mon, Oct 29 2012 11:44 am
Subject: Re: Immutability and Python
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2012/10/29 Jean-Michel Pichavant <jeanmic...@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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