diff -r 97bcf8efe4e0 -r bb6074814a73 progs/lecture1.scala
--- a/progs/lecture1.scala	Fri Nov 06 01:07:26 2020 +0000
+++ b/progs/lecture1.scala	Sat Nov 07 19:13:06 2020 +0000
@@ -1,21 +1,21 @@
 // Scala Lecture 1
 //=================
 
+
 // Value assignments
 // (their names should be lower case)
 //====================================
 
+val x = 42
+val y = 3 + 4 
+val z = x / y
+val x = 70
+print(z)
+
+// (you cannot reassign values: z = 9 will give an error)
 //var z = 9
 //z = 10
 
-val x = 42
-val y = 3 + 4
-val z = x / y
-val x = 70
-
-// (you cannot reassign values: z = 9 will give an error)
-
-
 // Hello World
 //=============
 
@@ -92,14 +92,11 @@
 
 val lst = List(1,2,3,1)
 
-
 println(lst.toString)
 
 println(lst.mkString)
 println(lst.mkString(","))
 
-println(lst.mkString(", "))
-
 // some methods take more than one argument
 
 println(lst.mkString("{", ",", "}"))