this might be easily solved, but anyways:
I have been thinking whether there is a fast way of retrieving property map
values of subsets of nodes? I mean the following: let's say I have a
property map A, defined for all vertices of graph G. Now, lets say I have a
vertex iterator V that spans a subset of all nodes of G. Is there now a
fast way, to a) read and b) eventually change the values in A of all nodes
in V, e.g. to do something like A[V] and to get an array back, like in A.a
Of course, iterating or map would be obvious options, but take eventually a
lot of time. Another idea I had was, let's say the property map is an
internal property map, to use vertex_filter and then get A.a. But what if
the property map is not internal?
I am happy about your thoughts.