| line | !l | l&&!r | l&&r | condition | 
 
| 195 | 11 | 185 | 0 | &blessed($n) and $n->does("Attean::API::Binding") | 
 
|  | 11 | 101 | 84 | &blessed($n) and $n->isa("Attean::Variable") | 
 
| 256 | 3 | 0 | 1 | $head->does('Attean::API::IRI') && $head->value eq $rdf_nil->value | 
 
|  | 0 | 1 | 3 | &blessed($head) and not $head->does('Attean::API::IRI') && $head->value eq $rdf_nil->value | 
 
| 334 | 0 | 0 | 2 | &blessed($algebra) and $algebra->does("Attean::API::Algebra") | 
 
| 350 | 0 | 0 | 6 | &blessed($algebra) and $algebra->does("Attean::API::Algebra") | 
 
| 369 | 0 | 3 | 13 | &blessed($_[0]) and $_[0]->does("Attean::API::TermOrVariable") | 
 
|  | 0 | 0 | 3 | &blessed($_[0]) and $_[0]->does("Attean::API::TripleOrQuadPattern") | 
| line | l | !l | condition | 
 
| 330 | 2 | 0 | shift() || die('No algebra available in evaluate call') | 
 
| 331 | 2 | 0 | shift() || die('No default graphs available in evaluate call') | 
 
| 346 | 6 | 0 | shift() || die('No algebra available in algebra_holds call') | 
 
| 347 | 6 | 0 | shift() || die('No default graphs available in algebra_holds call') | 
 
| 433 | 6 | 0 | 'Attean'->get_parser($format) || die("Failed to load parser for '${format}'") | 
 
| 434 | 6 | 0 | $class->new || die("Failed to construct parser for '${format}'") | 
 
| 446 | 1 | 0 | 'Attean'->get_parser($format) || die("Failed to load parser for '${format}'") | 
 
| 447 | 1 | 0 | $class->new || die("Failed to construct parser for '${format}'") |