commandline session
$ 4.2.29 1 2---> scala Welcome to Scala version 2.9.2 (OpenJDK 64-Bit Server VM, Java 1.6.0_24). Type in expressions to have them evaluated. Type :help for more information. scala> 1.toString res0: java.lang.String = 1 scala> 33.to(40).toString res1: String = Range(33, 34, 35, 36, 37, 38, 39, 40) scala> Jeffrin.intersect(Jose) :8: error: not found: value Jeffrin Jeffrin.intersect(Jose) ^ scala> "Jeffrin".intersect("Jose") res3: String = Je scala>