diff -r b37052895281 -r 37b1bfcdba79 handouts/scala-ho.tex
--- a/handouts/scala-ho.tex	Fri Jan 19 14:09:08 2018 +0000
+++ b/handouts/scala-ho.tex	Fri Feb 23 22:26:42 2018 +0000
@@ -15,21 +15,23 @@
 \section*{A Crash-Course on Scala}
 
 Scala is a programming language that combines functional and
-object-oriented programming-styles. It has received quite a
-bit of attention in the last five years or so. One reason for
-this attention is that, like the Java programming language,
-Scala compiles to the Java Virtual Machine (JVM) and therefore
-Scala programs can run under MacOSX, Linux and
-Windows.\footnote{There are also experimental backends for
-Android and JavaScript; and also work is under way to have a
-native compiler, see \url{https://github.com/scala-native/scala-native}.} Unlike Java, however, Scala often
-allows programmers to write very concise and elegant code.
-Some therefore say: Scala is the much better Java. A number of
-companies, The Guardian, Twitter, Coursera, FourSquare,
-LinkedIn to name a few, either use Scala exclusively in
-production code, or at least to some substantial degree. It
-also seems to be useful in job-interviews (in Data Science)
-according to this annectotical report
+object-oriented programming-styles. It has received quite a bit of
+attention in the last five or so years. One reason for this attention
+is that, like the Java programming language, Scala compiles to the
+Java Virtual Machine (JVM) and therefore Scala programs can run under
+MacOSX, Linux and Windows.\footnote{There are also experimental
+  backends for Android and JavaScript; and also work is under way to
+  have a native compiler, see
+  \url{https://github.com/scala-native/scala-native}.} Unlike Java,
+however, Scala often allows programmers to write very concise and
+elegant code.  Some therefore say: ``Scala is the better
+Java''.\footnote{\url{https://www.slideshare.net/maximnovak/joy-of-scala}}
+Also a number of companies (the Guardian, Twitter, Coursera,
+FourSquare, LinkedIn to name a few) either use Scala exclusively in
+production code, or at least to some substantial degree. Scala seems
+also to be useful in job-interviews (in Data Science) according to
+this anecdotal report
+
 
 \begin{quote}
 \url{https://techcrunch.com/2016/06/14/scala-is-the-new-golden-child/}
@@ -50,6 +52,18 @@
 \url{http://scala-ide.org/download/sdk.html}
 \end{quote}
 
+\noindent
+When developing Scala programs, I personally prefer to use Emacs
+or Sublime as my environment, since they provide an easy access
+to the Scala REPL (see below).  But it is also possible to work
+completely on the command line and also with heavy-duty IDEs
+like Eclipse of IntelliJ. There is even an online editor and
+environment for developing Scala programs called ScalaFiddle
+
+\begin{quote}
+\url{https://scalafiddle.io}
+\end{quote}
+
 Why do I use Scala in the AFL module? Actually, you can do
 \emph{any} part of the coursework in \emph{any} programming
 language you like. I use Scala for showing you code during the