diff -r 29fc780ca130 -r fa7f7144f2bb progs/lecture5.scala
--- a/progs/lecture5.scala	Tue Dec 07 01:35:00 2021 +0000
+++ b/progs/lecture5.scala	Tue Dec 07 23:17:51 2021 +0000
@@ -1,9 +1,36 @@
 // Scala Lecture 5
 //=================
 
+// Questions at
+//
+// pollev.com/cfltutoratki576
+
+(n, m) match {
+  case Pat1 =>
+  case _ =>
+}
+
+val delta : (State, Char) => State = 
+  { case (Q0, 'a') => Q1
+    case (Q0, 'b') => Q2
+    case (Q1, 'a') => Q4
+    case (Q1, 'b') => Q2
+    case (Q2, 'a') => Q3
+    case (Q2, 'b') => Q2
+    case (Q3, 'a') => Q4
+    case (Q3, 'b') => Q0
+    case (Q4, 'a') => Q4
+    case (Q4, 'b') => Q4 
+    case _ => throw new Exception("Undefined") }
 
 
+class Foo(i: Int)
 
+val v = new Foo(10)
+
+case class Bar(i: Int)
+
+val v = Bar(10)