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List:       boost-users
Subject:    Re: [Boost-users] [graph] [python] Python vertex vs. C++ Vertex
From:       "Nat Goodspeed" <ngoodspeed () solidworks ! com>
Date:       2006-02-28 13:53:07
Message-ID: ED67712627032740B15C91998D43FB4C0231EA10 () corp-mail4 ! solidworks ! swk
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> -----Original Message-----
> From: boost-users-bounces@lists.boost.org [mailto:boost-users-
> bounces@lists.boost.org] On Behalf Of David E. Konerding
> Sent: Monday, February 27, 2006 5:09 PM
> To: boost-users@lists.boost.org
> Subject: Re: [Boost-users] [graph] [python]
> 
> Doug Gregor wrote:
> >
> > Your guess is correct. We don't cache the Python objects
corresponding
> > to vertex and edge descriptors.
> 
> my idea was to keep the
> mapping between on-screen widgets and the graph vertices they
corresponded
> to in a dictionary:
> 
> self._widgetmap[vertex] = widget
> 
> However, since Vertex objects aren't cached, placing the vertex object
I
> get back from add_vertex obviously isn't going to work.

[Nat] Maybe twiddle the hash function of the Python vertex object so
that it derives its return value from the underlying C++ Vertex?


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