Bi-Directional Interface Between 'R' and 'Scala' with Callbacks
Description
The 'Scala' interpreter is embedded in 'R' and callbacks to 'R' from the embedded interpreter are supported. Conversely, the 'R' interpreter is embedded in 'Scala'. 'Scala' versions in the 2.10.x, 2.11.x, and 2.12.x series are supported.