Re: [boost] [Graph] iterator range splitting

Subject: Re: [boost] [Graph] iterator range splitting
From: Sandeep Gupta (gupta.sandeep_at_[hidden])
Date: 2009-06-26 18:43:32

Hi Jeremiah,
 The issue Tim brought up was regarding the case when the graph is not
fully read in the main memory. Instead memory is allocated per
out_edges invocation. For this to work the algorithm should not break
range obtained from a out_edges call. However current implementation
of dijkstra's does exactly that.

--  an example of range split: "depth_first_search(g, vis, color,
*vertices(g).first);"

Tim proposed that he should be able to provide patch to fix such
cases. I hope he has because for my current project I intend to
process a graph stored externally.

thanks
Sandeep

On Fri, Jun 26, 2009 at 3:22 PM, Jeremiah Willcock<jewillco_at_[hidden]> wrote:
> On Fri, 26 Jun 2009, Sandeep Gupta wrote:
>
>> Hi Tim/Andrew,
>> Was wondering if the splitting of out_edges range got fixed.
>
> Are you talking about minimizing the number of calls to vertices() and
> out_edges()?  If so, that was put in a while ago.  Please note the
> information from the previous emails that you should not rely on being able
> to create new containers for each call, though, since new algorithms might
> not respect this particular implementation detail.
>
> -- Jeremiah Willcock
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