[Lemon-devel] Renaming basic classes

[Balazs Dezso]

Hi Developers

The idea of renaming the main graph classes and items is quite urgent 
question. The UEdge and BpUGraph names are involved and on some points the 
naming conventions are not complete.

After some discussions, we suggest the next rename mappings:
Graph => Digraph
UGraph => Graph
BpUGraph => Bigraph

Edge => Arc
UEdge => Edge

uEdge...() => edge...()
aNode...() => anode...()
bNode...() => bnode...()

The source() and target() functions could be changed in the undirected graphs 
to first() and second(), or anode() and bnode(). This second variant is very 
close to the Bigraph interface, but there is not concrete meaning of the 
order of the nodes.

In my point of view the graph structures are quite stable but some solutions 
should be revised. The extenders make the compile errors and warnings 
unreadable but we do not have better solution. The handling of anodes and 
bnodes also should be revised.

Please comment this suggestions, if you agree with this proposals or if you 
have some improvements or other opinion.

Best regards, Balazs