[Lemon-user] is there a way to write a subgraph?

[John Lagerquist]

Péter,

It turns out that the issue I am having is related to trying to return
a FilterNodes<ListDigraph>
issue from a function.  If the FilterNodes<ListDigraph> object is local I
can iterate through the nodes as expected.  If the object is returned from
a function i.e.

FilterNodes<ListDigraph> get_subgraph(void)
{
}

void another_function()
{
     auto x = get_subgraph();

     for (FilterNodes<ListDigraph>::NodeIt n(x); n != INVALID; ++n)
     ...
}

I get an exception when trying to iterate through the nodes.

John




On Thu, Dec 29, 2016 at 5:28 PM, Kovács Péter <kpeter at inf.elte.hu> wrote:

> Hi John,
>
> What kind of write method are you looking for? Could you send a code
> snippet that works for the graph, but does not apply to the subgraph?
>
> Regards,
> Péter
>
>
> I have a subgraph as follows:
>>
>> FilterNodes<ListDigraph> sub(*graph, filter);
>>
>> There doesn't appear to be a write method for the subgraph as there is
>> for the graph.
>>
>> Suggestions?
>>
>>
>> --
>> John Lagerquist
>> Chief Engineer
>> RallyTronics LLC
>> 801-866-5981
>>
>>
>>
>>
>> _______________________________________________
>> Lemon-user mailing list
>> Lemon-user at lemon.cs.elte.hu
>> http://lemon.cs.elte.hu/mailman/listinfo/lemon-user
>>
>>
>


-- 
John Lagerquist
Chief Engineer
RallyTronics LLC
801-866-5981
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