auto

03_demo.txt

+// Notes used by pete in class (not originally intended to be public,
+// but I was asked.....), some of these are examples of
+// correct usage, and some illustrate issues to be fixed in class. Some
+// lines are comments, some are notes to myself. They are not intended
+// to be correct "as is". Use them to explore on your own.
+
 ```go
 func changeB(a:String, b: inout String) {
    b = "\(a)\(b)"

exercises-9-9.md

+// Notes used by pete in class (not originally intended to be public,
+// but I was asked.....), some of these are examples of
+// correct usage, and some illustrate issues to be fixed in class. Some
+// lines are comments, some are notes to myself. They are not intended
+// to be correct "as is". Use them to explore on your own.
+
 ```swift
 struct Stack<Element> {
       var items = [Element]()