matthandlersux · August 17, 2012 20:06 · Aug 17, 2012
diff --git a/whywrong.scala b/whywrong.scala
@@ -0,0 +1,30 @@
+class Test {
+    def pullOutType[V](f:Map[String, V] => Unit) {
+        var map = Map[String, V]()
+        val params = Map("string" -> "string", "int" -> 20, "list" -> List("ok", "then"))
+
+        params.foreach {
+            case (field, value) => value match {
+                case v:V => map = map + (field -> v)
+                case _ => null
+            }
+            case _ => null
+        }
+
+        f(map)
+    }
+}
+
+val x = new Test
+
+x.pullOutType[List[String]] { data:Map[String, List[String]] =>
+    assert(data.size == 2)
+}
+
+x.pullOutType { data:Map[String, String] =>
+    assert(data.first == "string")
+}
+
+x.pullOutType { data:Map[String, Int] =>
+    assert(data.first == 20)
+}