diff -r f88b5cec2e5d -r 1bde878ba6c9 slides/slides02.tex
--- a/slides/slides02.tex	Sun Nov 15 13:10:43 2020 +0000
+++ b/slides/slides02.tex	Tue Nov 17 00:34:55 2020 +0000
@@ -58,105 +58,105 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
 
 
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
-\begin{frame}[t,fragile]
-\frametitle{For-Comprehensions}
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
+% \begin{frame}[t,fragile]
+% \frametitle{For-Comprehensions}
 
-%\small
-\begin{lstlisting}[language=Scala,numbers=none]
-for (n <- List(1, 2, 3, 4, 5)) yield n * n
-\end{lstlisting}
+% %\small
+% \begin{lstlisting}[language=Scala,numbers=none]
+% for (n <- List(1, 2, 3, 4, 5)) yield n * n
+% \end{lstlisting}
 
-\begin{textblock}{5}(2,6)
-\includegraphics[scale=0.3]{../pics/fun.png}
-\end{textblock}  
+% \begin{textblock}{5}(2,6)
+% \includegraphics[scale=0.3]{../pics/fun.png}
+% \end{textblock}  
 
-\begin{textblock}{5}(9,6)
-\includegraphics[scale=0.3]{../pics/fun.png}
-\end{textblock}  
+% \begin{textblock}{5}(9,6)
+% \includegraphics[scale=0.3]{../pics/fun.png}
+% \end{textblock}  
 
 
-\end{frame}
+% \end{frame}
 
 
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
-\begin{frame}[t]
-\frametitle{For-Comprehensions}
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
+% \begin{frame}[t]
+% \frametitle{For-Comprehensions}
 
-\begin{center}
-  \begin{tikzpicture}[scale=1,
-                      node/.style={
-                      rectangle,rounded corners=3mm,
-                      very thick,draw=black!50,
-                      minimum height=18mm, minimum width=20mm,
-                      top color=white,bottom color=black!20}]
+% \begin{center}
+%   \begin{tikzpicture}[scale=1,
+%                       node/.style={
+%                       rectangle,rounded corners=3mm,
+%                       very thick,draw=black!50,
+%                       minimum height=18mm, minimum width=20mm,
+%                       top color=white,bottom color=black!20}]
 
-  \node (A0) at (0.1,0) {\texttt{\textcolor{purple}{\textbf{for}} (\alert<2->{n} <- List(}};
-  \node (A1) at (2.3,0) {\texttt{\phantom{,}1,}};
-  \node (A2) at (3.2,0) {\texttt{\phantom{,}2,}};
-  \node (A3) at (4.1,0) {\texttt{\phantom{,}3,}};
-  \node (A4) at (5.0,0) {\texttt{\phantom{,}4,}};
-  \node (A5) at (5.9,0) {\texttt{\phantom{))}5))}};
-  \node (A6) at (8,0) {\texttt{\textcolor{purple}{\textbf{yield}} \alert<2->{n\,*\,n}}};
+%   \node (A0) at (0.1,0) {\texttt{\textcolor{purple}{\textbf{for}} (\alert<2->{n} <- List(}};
+%   \node (A1) at (2.3,0) {\texttt{\phantom{,}1,}};
+%   \node (A2) at (3.2,0) {\texttt{\phantom{,}2,}};
+%   \node (A3) at (4.1,0) {\texttt{\phantom{,}3,}};
+%   \node (A4) at (5.0,0) {\texttt{\phantom{,}4,}};
+%   \node (A5) at (5.9,0) {\texttt{\phantom{))}5))}};
+%   \node (A6) at (8,0) {\texttt{\textcolor{purple}{\textbf{yield}} \alert<2->{n\,*\,n}}};
 
-  \onslide<2->{
-  \node (B0) at (1.4,-3) {\texttt{List(}};
-  \node (B1) at (2.3,-3) {\texttt{\phantom{,}1,}};
-  \node (B2) at (3.6,-3) {\texttt{\phantom{,}4,}};
-  \node (B3) at (4.9,-3) {\texttt{\phantom{,}9,}};
-  \node (B4) at (6.2,-3) {\texttt{\phantom{,}16,}};
-  \node (B5) at (7.5,-3) {\texttt{\phantom{,}25)}};}
+%   \onslide<2->{
+%   \node (B0) at (1.4,-3) {\texttt{List(}};
+%   \node (B1) at (2.3,-3) {\texttt{\phantom{,}1,}};
+%   \node (B2) at (3.6,-3) {\texttt{\phantom{,}4,}};
+%   \node (B3) at (4.9,-3) {\texttt{\phantom{,}9,}};
+%   \node (B4) at (6.2,-3) {\texttt{\phantom{,}16,}};
+%   \node (B5) at (7.5,-3) {\texttt{\phantom{,}25)}};}
 
-  \onslide<2->{
-  \draw [->,line width=1mm] (A1.south) -- (B1.north);
-  \draw [->,line width=1mm] (A2.south) -- (B2.north);
-  \draw [->,line width=1mm] (A3.south) -- (B3.north);
-  \draw [->,line width=1mm] (A4.south) -- (B4.north);
-  \draw [->,line width=1mm] (A5.south) -- (B5.north);}
+%   \onslide<2->{
+%   \draw [->,line width=1mm] (A1.south) -- (B1.north);
+%   \draw [->,line width=1mm] (A2.south) -- (B2.north);
+%   \draw [->,line width=1mm] (A3.south) -- (B3.north);
+%   \draw [->,line width=1mm] (A4.south) -- (B4.north);
+%   \draw [->,line width=1mm] (A5.south) -- (B5.north);}
 
-  \onslide<2->{
-  \node (Q1) at (-0.45,-0.1) {};
-  \node (Q2) at (-0.45,-2.8) {};
-  \node (Q3) at (-0.45,-2.95) {\alert<2->{\texttt{n\,*\,n:}}};
-  \draw [->,red,line width=1mm] (Q1.south) -- (Q2.north);}
- \end{tikzpicture}
-\end{center}
+%   \onslide<2->{
+%   \node (Q1) at (-0.45,-0.1) {};
+%   \node (Q2) at (-0.45,-2.8) {};
+%   \node (Q3) at (-0.45,-2.95) {\alert<2->{\texttt{n\,*\,n:}}};
+%   \draw [->,red,line width=1mm] (Q1.south) -- (Q2.north);}
+%  \end{tikzpicture}
+% \end{center}
 
-\onslide<3>{This is for when the for-comprehension\\ \textbf{yields / produces} a result.}
+% \onslide<3>{This is for when the for-comprehension\\ \textbf{yields / produces} a result.}
 
-\end{frame}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% \end{frame}
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
-\begin{frame}[t]
-\frametitle{For-Comprehensions Again}
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
+% \begin{frame}[t]
+% \frametitle{For-Comprehensions Again}
 
-\begin{center}
-  \begin{tikzpicture}[scale=1,
-                      node/.style={
-                      rectangle,rounded corners=3mm,
-                      very thick,draw=black!50,
-                      minimum height=18mm, minimum width=20mm,
-                      top color=white,bottom color=black!20}]
+% \begin{center}
+%   \begin{tikzpicture}[scale=1,
+%                       node/.style={
+%                       rectangle,rounded corners=3mm,
+%                       very thick,draw=black!50,
+%                       minimum height=18mm, minimum width=20mm,
+%                       top color=white,bottom color=black!20}]
 
-  \node (A0) at (0,0)
-    {\texttt{\textcolor{purple}{\textbf{for}} (n <- List(1, 2, 3, 4, 5))
-             \textcolor{purple}{\textbf{yield}} n\,*\,n}};
+%   \node (A0) at (0,0)
+%     {\texttt{\textcolor{purple}{\textbf{for}} (n <- List(1, 2, 3, 4, 5))
+%              \textcolor{purple}{\textbf{yield}} n\,*\,n}};
 
-  \node (A1) at (0,-1.5) {\LARGE\textbf{vs}};       
+%   \node (A1) at (0,-1.5) {\LARGE\textbf{vs}};       
          
-  \node (A2) at (0,-3)
-    {\texttt{\textcolor{purple}{\textbf{for}} (n <- List(1, 2, 3, 4, 5)) println(n)}};
- \end{tikzpicture}
-\end{center}\bigskip
+%   \node (A2) at (0,-3)
+%     {\texttt{\textcolor{purple}{\textbf{for}} (n <- List(1, 2, 3, 4, 5)) println(n)}};
+%  \end{tikzpicture}
+% \end{center}\bigskip
 
 
-The second version is in case the for \textbf{does not}
-produce any result.
+% The second version is in case the for \textbf{does not}
+% produce any result.
 
-\end{frame}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% \end{frame}
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
@@ -236,7 +236,7 @@
 List(7,2,3,4,5,6).find(_ < 4)
 \end{lstlisting}
     
-\UParrow{1}{10}{11}    
+\UParrow{1}{8}{11}    
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   
@@ -260,6 +260,26 @@
     
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
+\begin{frame}[c,fragile]
+\frametitle{Anonymous Functions}
+  
+
+\begin{lstlisting}[language=Scala, numbers=none, xleftmargin=1mm]
+def less4(x: Int) = x < 4
+\end{lstlisting}
+
+\begin{center}
+vs
+\end{center}  
+
+\begin{lstlisting}[language=Scala, numbers=none, xleftmargin=1mm]
+      (x: Int) => x < 4
+\end{lstlisting}
+
+\end{frame}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
     
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
 \begin{frame}[c,fragile]