I am tempted ;o) I used to diffenentiate between in and inout years ago in my
Pascal and Ada days ... Eventhough this offer comes on a Thursday.
A few random observations:
a) From what I gather, for some years, the pass by value and pass by
reference has been dormant
Ada has the in, out and inout. This makes sense in Ada as it has a very
formal specification-body-separation paradigm. IMHO, Java punts this -
primitives are "in" and objects are "inout".
b) Of course, we can simulate "in" by a deep copy to a temp variable and
then restoring the variable back before return. The "out" and "inout" do not
need any special tratment.
c) The intent, from what I can gather, is to provide a crispier expression
of paratemter handling and also the ability to explicitly specify them in the
interfaces. But in the world of immutable objects and deeply nestes object
graphs, this is not that straight forward and most probably wouldn't be 100%
elegant.
d) One clear advantage is that this will minimize side effects and
surprises/programming, eventually adding reliabliltiy to the systems developed
using py.
Cheers
<k/>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Michael Chermside
> Sent: Thursday, May 04, 2006 1:50 PM
> To: [EMAIL PROTECTED]
> Cc: python-3000@python.org
> Subject: Re: [Python-3000] in-out parameters
>
> [Rudy Rudolph writes to propose adding in-out parameters in Py3K]
>
> Rudy:
>
> Special offer, good this week only!
>
> If you send me a sample piece of code using in-out parameters
> written in any language I can understand, I will provide
> (free of charge!) a translation into highly readable
> idiomatic Python that doesn't use in-out parameters. I am so
> confident of my ability to achieve in-out parameter behavior
> cleanly in Python that I am offering to post an apology here
> if I think any example you provide is less than clear when
> written in a Pythonic manner.
>
> Send to "[EMAIL PROTECTED]" to collect on this offer.
>
> They're-really-not-needed-lly yours,
>
> -- Michael Chermside
>
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