### ERROR: no matching overloaded instance of...

Posted:

**03 Jun 2018, 23:19**Hi,

I'm getting errors of the form ERROR: no matching overloaded instance of... a lot, and I'm not sure how to interpret them. For example, when I run
I get the error "ERROR: no matching overloaded instance of Polymake::topaz::homology(SimplicialComplex, Int)"

(I took this construction of a simplicial complex from the documentation. The simplicial complex that I'm dealing with has a different construction, but gives the same error).

This isn't important in this specific case, since I can get the homology using $c->HOMOLOGY;, but what causes this sort of error?

Thank you very much for your help!

I'm getting errors of the form ERROR: no matching overloaded instance of... a lot, and I'm not sure how to interpret them. For example, when I run

Code: Select all

```
$g = graph_from_edges([[0,1],[0,2],[1,2],[2,3]]);
$c = topaz::clique_complex($g,no_labels=>1);
topaz::homology($c, 0);
```

(I took this construction of a simplicial complex from the documentation. The simplicial complex that I'm dealing with has a different construction, but gives the same error).

This isn't important in this specific case, since I can get the homology using $c->HOMOLOGY;, but what causes this sort of error?

Thank you very much for your help!