--- a/progs/lecture3.scala	Wed Nov 16 15:05:40 2016 +0000
+++ b/progs/lecture3.scala	Wed Nov 16 23:34:05 2016 +0000
@@ -1,2 +1,18 @@
 // regular expressions
 // ?? polymorphism
+
+A function should do one thing, and only one thing.
+
+Make your variables immutable, unless there's a good reason not to.
+
+You can be productive on Day 1, but the language is deep, so as you go
+along you’ll keep learning, and finding newer, better ways to write
+code. Scala will change the way you think about programming (and
+that’s a good thing).
+
+Of all of Scala’s benefits, what I like best is that it lets you write
+concise, readable code
+
+
+
+ScalaTest download page: http://www.scalatest.org/download