added a little helper method for processing a closeable object which then makes sure the resource is closed (like the try-with-resource extension in Java 7)

testlib/test/HelloWorld.txt

@@ -0,0 +1,2 @@
+Hello
+World

testlib/test/IoTest.kt

@@ -0,0 +1,31 @@
+namespace test.collections
+
+import std.test.*
+
+import std.io.*
+import std.util.*
+import java.io.*
+
+class IoTest() : TestSupport() {
+  val file = File("test/HelloWorld.txt")
+
+  fun testUse() {
+    val list = arrayList<String>()
+
+    val reader = FileReader(file).buffered()
+    reader.close()
+
+    /**
+    TODO compiler error?
+    reader.use<BufferedReader,Unit>{
+      val line = it.readLine()
+      if (line != null) {
+        list.add(line)
+      }
+    }
+
+    assertEquals(arrayList("Hello", "World"), list)
+    */
+  }
+
+}