adding exeception handling

Author: mdodsworth

exception-passing.scala

@@ -0,0 +1,23 @@
+def exceptionToLeft[T](f: => T): Either[Exception, T] = {
+    try {
+        Right(f)
+    }
+    catch {
+        case e:Exception => Left(e)
+    }
+}
+
+def testExceptionThrower(i:Int) = {
+    i % 2 match {
+        case 0 => throw new RuntimeException("boom!")
+        case 1 => i
+    }
+}
+
+for(i <- 1 to 3) {
+    exceptionToLeft(testExceptionThrower(i)) match {
+        case Left(ex) => println("pop!")
+        case Right(x) => println(x)
+    }
+}
+