must be of arity >= 2
for hyperedges and of arity == 2
for edges.
(wkHyperEdgeCompanion: StringAdd).self
(wkHyperEdgeCompanion: StringFormat).self
(wkHyperEdgeCompanion: OuterNode[WkHyperEdgeCompanion[E]]).toString()
(wkHyperEdgeCompanion: ArrowAssoc[WkHyperEdgeCompanion[E]]).x
(Since version 2.10.0) Use leftOfArrow
instead
(wkHyperEdgeCompanion: Ensuring[WkHyperEdgeCompanion[E]]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
Everything common to key-weighted hyperedge companion objects.