there is a compile error when trying to get a particular value from a nonexistent member of a bundled property map. Is
that a case that is
important to you? There are several Boost graph algorithms that make a
Thanks a lot for your detailed answer :) No, for the moment, that case is not important to me, as, for the moment, the only real need I have is to find out whether a given graph has the internal vertex-index property that, for example, adjacency_list with vecS for vertex list has. Based on this information, I'll directly invoke algorithms that need that property, or I'll build a property_map with assigned indices for vertices and pass it to the algorithm. Right now I always do this last option, but it would save running time, if I could detect when this property already exists, so that I don't have to create the property map, which takes linear time. Cheers, Juan