Reserve vector size

[richelbilderbeek]

Here is the thread:

https://www.reddit.com/r/cpp/comments/3xw5q0/a_wellconnected_c11_boostgraph_tutorial/

From mat69:

• You often create vectors of vertices/edges/names. When using unfiltered graphs you could use reserve in combination with num_edges, num_vertices.

[richelbilderbeek]

Thanks typo, I will code this issue by hand then :-)