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Subject: [Boost-users] [graph] Getting bundled-properties types
From: Juan Antonio Farré Basurte (jafb_at_[hidden])
Date: 2009-03-14 20:29:24

I'm working in a graph algorithm that works on graphs that implement
 BidirectionalGraphConcept and
The only additional requirement is that they must have some concrete bundled properties
(I don't want to
deal with the, I understand old, method of defining properties).
For example, if g is a graph and v is a valid vertex descriptor of that


must be a valid boolean expression.
I have defined template classes for those bundled properties, but I
wish not to impose using those concrete classes.
To do so, I never get g[v] in a variable to later access the properties. For example, I always


instead of something like

BundledVertexPropertyType &p=g[v];

Ok, for the
The problem is that, at some point of my algorithm (concretely when wanting to invoke the topological_sort
BGL algorithm) I must
have knowledge of what's the concrete type of the bundled properties
(i.e., I need to know that BundledVertexPropertyType written before).
I can't find in BGL documentation a way to do that. I look, for example, for something like, imagine,


Is there a documented way to achieve that?
If not, is there any way how
I can get a property map to provide access to a bundled property without knowing the bundled-property type?
Right now I'm using an expression
like the following one:


But this obviously requires knowing the
BundledVertexPropertyType when writing the code. Is there any way to avoid it?

Thanks a lot,


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