Re: [igraph] Attributes in use

[Gábor Csárdi]

On Thu, Nov 12, 2009 at 2:43 PM, Tamas Nepusz <address@hidden> wrote:
> Hi,
>
>> I am using the (experimental) C-based attribute handler, and I would like to 
>> check whether a given attribute label is already in use. [...] in iGraph's 
>> source I found igraph_i_cattribute_has_attr() and that seems to do exactly 
>> what I'd like.  Unfortunately, it does not seem to be exposed for my use.  
>> Can you explain the rationale for that?
> Hmmm... Gabor? I don't have any objections against exposing that function.

Sure, we can export it. As log as we don't add more functions to the
attribute handler table, everything is fine.

Gabor

>> Is there an easy way to gain access to it?
> Create a custom header file called igraph_extras.h and add the following to 
> it:
>
> #ifndef IGRAPH_EXTRAS_H
> #define IGRAPH_EXTRAS_H
>
> #include <igraph/igraph.h>
>
> igraph_bool_t igraph_i_cattribute_has_attr(const igraph_t *graph, 
> igraph_attribute_elemtype_t type, const char* name);
>
> #endif
>
> After that, include igraph_extras.h wherever you need 
> igraph_i_cattribute_has_attr. I think that should do the trick.
>
> --
> Tamas
>
>
>
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-- 
Gabor Csardi <address@hidden>     UNIL DGM