
diff -r 34e901c529ce -r 370c0647a9bf handouts/scala-ho.tex
--- a/handouts/scala-ho.tex	Mon Sep 01 18:05:39 2014 +0100
+++ b/handouts/scala-ho.tex	Wed Sep 03 11:01:49 2014 +0100
@@ -604,12 +604,20 @@
 
 
 \noindent
-Since this function returns a pair of integers, its type
-needs to be \code{(Int, Int)}. 
+Since this function returns a pair of integers, its 
+return type needs to be \code{(Int, Int)}. Incidentally,
+this is also the input type of this function. Notice it takes
+\emph{two} arguments, namely \code{m} and \code{n}, both
+of which are integers. They are ``packaged'' in a pair.
+Consequently the complete type of \code{quo_rem} is
+
+\begin{lstlisting}[language=Scala, numbers=none]
+(Int, Int) => (Int, Int)
+\end{lstlisting}
 
 Another special type-constructor is for functions, written
-as the arrow \code{=>}. For example, the type \code{Int =>
-String} is for a function that takes an integer as argument
+as the arrow \code{=>}. For example, the type 
+\code{Int => String} is for a function that takes an integer as argument
 and produces a string. A function of this type is for instance
 
 
@@ -899,6 +907,10 @@
 \item \url{https://www.youtube.com/user/ShadowofCatron}
 \end{itemize}
 
+\noindent There is also a course at Coursera on Functional
+Programming Principles in Scala by Martin Odersky, the main
+developer of the Scala language.
+
 While I am quite enthusiastic about Scala, I am also happy to
 admit that it has more than its fair share of faults. The
 problem seen earlier of having to give an explicit type to
@@ -936,6 +948,8 @@
 you do not want, stick with the language you are most familiar
 with.
 
+
+
 \end{document}
 
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