rack_save.RdSerialises data to a temporary JSON file and uploads it to backend under
name. This is a convenience wrapper around rack_upload() that handles
JSON serialisation automatically.
rack_save(backend, data, ..., name)A rack backend object (e.g. a pins_board).
An R object to serialise and store (typically the session list returned by the blockr session machinery).
Additional arguments forwarded to rack_upload().
Character scalar. The name under which the session will be stored.
A rack_id object identifying the newly created version, returned
invisibly by the underlying rack_upload() call.
rack_load() for the complementary load function,
rack_upload() for the underlying upload generic.