Custom Query (545 matches)

Some test programs should be extended.

• random_test.cc
• path_test.cc
• unionfind_test.cc (UnionFind, ExtendFindEnum, HeapUnionFind)
• graph_utils_test.cc (SourceMap, TargetMap, ForwardMap, BackwardMap, IdMap, InvertableMap etc.)

1. Path structures have a function nth(int n) for getting the n th arc of the path. I suggest operator[] as an alias for this function.

2. It would be nice to have source() and target() functions for paths. But it raise questions.
   • Is it necessary that all the arcs in a path are directed in the same direction? Or we could store oppositely directed arc in a path as well? How should we define the source/target? Would the source node be equal to gr.source(path.front()) and the target to gr.target(path.back())?
   • Should paths store source and target nodes explicitly? It would make it possible to handle paths of zero length (with a specified starting node).

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