Bug with boost/graph/detail/edge.hpp

[mzartek@…]

Hi,

I found a bug and it has not been solved yet (i searched on the latest source on the git repo), ok here it is:

The bug is that the use of the header "boost/graph/detail/edge.hpp" alone in a program cause an error at the compilation:

This error say that the "hash struct" is not a template class. After some searching i noticed that this "hash struct" is a template specialization, and the problem is that the "hash struct" generic template is not included in this file, i fixed it by adding the "boost/functional/hash/hash.hpp" header.

I don't know if this fix could be enough, but it works for my use.

[mzartek@…]

Output of the diff -u between the old and new "boost/graph/detail/edge.hpp" file

[djh]

Hashable Edge POC for Compressed Sparse Row Graph

[djh]

I had similar issues with missing hash specializations, when storing Compressed Sparse Row (CSR) Graph Edges in unordered sets.

I attached a trivial std hash specialization that works for me, but may need to be more generic (e.g. depending in the EdgeIndex and Vertex type).