I thought Ruby uses .rb (not .ru), and Scala uses .scala (not .sc).
In Scala, .sc is used for worksheets and inconsistently for scripting, see https://scala-cli.virtuslab.org/scripting for instance.
Yeah, should be .rb for Ruby. Also .mm isn't Objective-C, but Objective-C++.
In Scala, .sc is used for worksheets and inconsistently for scripting, see https://scala-cli.virtuslab.org/scripting for instance.