This is an abstract class that serves as a base class for all concrete backend implementations. It defines the common properties that all concrete backends require.
This class cannot be instantiated. It needs to be extended by concrete
subclasses that implement the pure virtual methods. Instances of concrete
backend implementations can be conveniently obtained using the
The cluster object used by the backend. For
SyncBackendobjects, this is a cluster object created by
AsyncBackendobjects, this is a permanent
Rsession created by
callr::r_sessionthat contains the
A boolean value indicating whether the backend implementation supports progress tracking.
A boolean value indicating whether the backend implementation has an active cluster.
Create a new