Additional Cells exist, but are likely not so useful to the more common user.
  • MirroredCell - for reflection
  • WeakCell - for WeakReferences
  • AtomicCell - for AtomicReferences
  • CollectionCell - acts as a Collection
It is also possible to implement your own cells, this should be done by either subclassing RefCell or LateInitCell, or one of their subtypes. If using Core or beyond, you should look at the Cells defined in those modules.