a bug?

[jie-huangfu]

in the file include/graph/detail/directed_adjacency_vector_impl.hpp, line 908:

const auto& [ukey, vkey, uv_val] = edge_data;

the uv_val should be removed, as the tuple edge_data has only 2 elements.

[jie-huangfu]

another one, in the same file, line 1403:

the constructor for "edge_type" is wrong

should remove line 1401-1403, and just use:
edges_.emplace_back(edge_type(from_key, to_key));

[jie-huangfu]

also, this file probably should include the header file <limits>
or g++ ( version 11) will complain about numeric_limits<unsigned int>::max()

[pratzl]

I appreciate your looking at the details. There are some potential major changes to the whole API, so I don't want to put much time into this at the moment. It's hard to say how long it will take - we have a CppCon talk to prepare for and I have a long break also.