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+% !TEX program = xelatex
+\documentclass{article}
+\usepackage{../styles/style}
+\usepackage{../styles/langs}
+\usepackage{tikz}
+\usepackage{pgf}
+\usepackage{marvosym}
+\usepackage{boxedminipage}
+
+\lstset{escapeinside={/*!}{!*/}}
+\newcommand{\annotation}[1]{\hfill\footnotesize{}#1}
+
+\usepackage{menukeys}
+
+
+% Exact colors from NB
+\usepackage[breakable]{tcolorbox}
+\definecolor{incolor}{HTML}{303F9F}
+\definecolor{outcolor}{HTML}{D84315}
+\definecolor{cellborder}{HTML}{CFCFCF}
+\definecolor{cellbackground}{HTML}{F7F7F7}
+
+
+    
+\begin{document}
+\fnote{\copyright{} Christian Urban, King's College London, 2022}
+
+\section*{Scala Worksheet 1}
+
+Please install Scala on your work-machine: You should have
+Scala up and running, and also an IDE that allows you to
+access the Scala REPL. Some instructions are given at
+
+\begin{center}
+\url{https://www.scala-lang.org/download/2.13.10.html}
+\end{center}  
+
+\subsubsection*{MacOSX}
+
+\begin{itemize}
+\item[0)] (if needed) \texttt{brew install java} \;\;or\;\; \texttt{brew reinstall java}
+\item[1)] \texttt{brew install scala@2.13}
+\end{itemize}
+
+\noindent Another method to install Scala on MacOSX
+
+\begin{itemize} 
+\item[1)] \texttt{curl -s "https://get.sdkman.io" | bash}
+\item[2)] \texttt{sdk install scala 2.13.10}  
+\end{itemize}
+
+\subsubsection*{Windows / Linux Ubuntu}
+
+\begin{itemize}
+\item[0)] (if needed) \texttt{sudo apt-get remove scala-library scala}
+\item[1)] {\fontsize{8.5}{8.5}\selectfont\texttt{sudo wget https://downloads.lightbend.com/scala/2.13.10/scala-2.13.7.deb}}
+\item[2)] \texttt{sudo dpkg -i scala-2.13.10.deb}  
+\end{itemize}
+
+\noindent
+Other Linux distros: \texttt{sudo apt-get scala}\bigskip
+
+\noindent In the end you should have something running like
+
+\begin{lstlisting}[language={},numbers=none,basicstyle=\ttfamily\small]
+$ scala
+Welcome to Scala 2.13.10 (OpenJDK 64-Bit Server VM, Java 17.0.1).
+Type in expressions for evaluation. Or try :help.
+
+scala>
+\end{lstlisting}%$
+
+\newpage
+
+\subsection*{Task 1}
+
+`Play' with the Scala REPL and try out the following querries. Observe
+what Scala responds.
+
+\begin{lstlisting}[numbers=none]
+scala> 2 + 2
+scala> 1 / 2
+scala> 1.0 / 2
+scala> 1 / 2.0
+scala> 1 / 0
+scala> 1.0 / 0.0
+scala> true == false
+scala> true && false
+scala> 1 > 1.0
+scala> "12345".length
+scala> List(1,2,1).size
+scala> Set(1,2,1).size
+scala> List(1) == List(1)
+scala> Set(1,2,3) == Set(3,2,1)
+scala> Array(1) == Array(1)
+scala> Array(1).sameElements(Array(1))
+\end{lstlisting}
+
+\subsection*{Task 2 (Vals)}
+
+scala> val z = 42
+scala> z = z + 1
+scala> val z = 466
+
+\subsection*{Task 3}
+
+\begin{lstlisting}[numbers=none]
+scala> println("Hello " ++ "World")
+scala> 
+\end{lstlisting}
+
+\begin{lstlisting}[numbers=none]
+scala> println("Hello " ++ "World")
+scala> 
+\end{lstlisting}
+
+\end{document}
+
+%%% Local Variables: 
+%%% mode: latex
+%%% TeX-master: t
+%%% End: