I use the edge descriptor as part of a string identifier and in this case: "(u,v) " != "(v,u)" Is there any way to access the m_property value. Daniel Mitchell wrote:

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How do I access the m_property value of an edge_descriptor.

I'm using an undirected graph and I need to get a unique identifier for each edge in the graph. The vertex pair I currently use for edges create two possible identifiers for each edge, but the m_property value of each edge appears unique only I cannot access it.

Why wouldn't you use the edge descriptor itself as the unique identifier? It should be the case that (u,v) == (v,u).

D.