KeySet and ValueSet are inserted into the map structures.
They makes possible the iterating on the keys or values only.
1 hier: hierarchygraph.h hierarchygraph_test.cc
2 g++ -Wall -W -I../.. -I../klao -I../../hugo hierarchygraph_test.cc -o test
4 edge: edgepathgraph_test.cc edgepathgraph.h
5 g++ -Wall -W -I../.. -I../klao -I../../hugo edgepathgraph_test.cc -o test