Gabor Szarnyas

I think this will be possible with the [C++ API](https://people.eecs.berkeley.edu/~demmel/ma221_Spr20/GraphBLASCppAPI20.pdf) but (I think) providing a solution for this is not even on the roadmap for the C API. So we...

@mynameisvinn I like the idea but I have a question. To determine whether the topological sort is possible, you need to check that the graph is a DAG. I have...

@mynameisvinn this seems very expensive to check - especially for graphs that turn out to be cyclic. But I guess we can make this check optional if the user guarantees...

@mynameisvinn sorry for dropping the ball on this. It could work but SuiteSparse:GraphBLAS, unlike SuiteSparse, has no built-in support for computing eigenvalues. So you'd have to roll out your own...

This works now: ```py print(A[3].select(lib.GxB_NONZERO)) print(A.select(lib.GxB_NONZERO)) ``` ``` ```

I've just seen your reason to leave this open: > I haven't wrapped GxB_SelectOp_new yet, it would look a lot like the @binaryop decorator on the UDT notebook example. I'll...

Hi, I trimmed down the zip of the buggy solution: [UWPCalc2.zip](https://github.com/panthernet/GraphX/files/1833584/UWPCalc2.zip)

This issue still exists. I got the following exception: ``` /home/szarnyasg/.rvm/gems/ruby-2.2.1/gems/teachers_pet-0.3.5/lib/teachers_pet/actions/open_issue.rb:19:in `initialize': no implicit conversion of nil into String (TypeError) from /home/szarnyasg/.rvm/gems/ruby-2.2.1/gems/teachers_pet-0.3.5/lib/teachers_pet/actions/open_issue.rb:19:in `open' from /home/szarnyasg/.rvm/gems/ruby-2.2.1/gems/teachers_pet-0.3.5/lib/teachers_pet/actions/open_issue.rb:19:in `load_files' from /home/szarnyasg/.rvm/gems/ruby-2.2.1/gems/teachers_pet-0.3.5/lib/teachers_pet/actions/open_issue.rb:52:in `run' from...

Followup from the discussion at the [Implementing the LDBC Graphalytics benchmark](https://igraph.discourse.group/t/implementing-the-ldbc-graphalytics-benchmark/417/5) thread: this benchmark needs directed LCC, defined in [its specification](https://ldbc.github.io/ldbc_graphalytics_docs/graphalytics_spec.pdf) as follows:  IMHO this directed definition is quite...

Thanks for the fix. With DuckDB versions 0.5.0 and 0.5.1, the Java program now returns the following for timestamps with time zone: ```java stmt.executeUpdate("CREATE TABLE t2(ts timestamp with time zone);");...