1 \documentclass[dvipsnames,14pt,t,xelatex]{beamer}

     2 \usepackage{../slides}

     3 \usepackage{../graphics}

     4 \usepackage{../langs}

     5 %\usepackage{../data}

     6 

     7 \hfuzz=220pt 

     8 

     9 %\setmonofont[Scale=.88]{Consolas}

    10 %\newfontfamily{\consolas}{Consolas}

    11 

    12 \lstset{language=Scala,

    13         style=mystyle,

    14         numbersep=0pt,

    15         numbers=none,

    16         xleftmargin=0mm}

    17 

    18 \newcommand{\bl}[1]{\textcolor{blue}{#1}}     

    19 

    20 % beamer stuff 

    21 \renewcommand{\slidecaption}{PEP (Scala) 02, King's College London}

    22 

    23 

    24 \begin{document}

    25 

    26 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    27 \begin{frame}[t]

    28 \frametitle{%

    29   \begin{tabular}{@ {}c@ {}}

    30   \\[5mm]

    31   \huge PEP Scala (2) 

    32   \end{tabular}}

    33 

    34   \normalsize

    35   \begin{center}

    36   \begin{tabular}{ll}

    37   Email:  & christian.urban at kcl.ac.uk\\

    38   Office: & S1.27 (1st floor Strand Building)\\

    39   Slides \& Code: & KEATS

    40   \end{tabular}

    41   \end{center}

    42 

    43 

    44 \end{frame}

    45 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     

    46 

    47 \begin{frame}[t]

    48 \frametitle{\begin{tabular}{c}Why Scala?\end{tabular}}

    49 

    50 

    51 \begin{itemize}

    52 \item \large {\bf You can avoid \textcolor{blue}{\texttt{null}}}:

    53 \end{itemize}

    54 

    55 

    56 \begin{textblock}{6}(1,5)

    57   \begin{bubble}[10.5cm]\small

    58       ``I call it my billion-dollar mistake. It was the invention of

    59       the null reference in 1965. At that time, I was designing the

    60       first comprehensive type system for references in an object

    61       oriented language (ALGOL W). My goal was to ensure that all use

    62       of references should be absolutely safe, with checking performed

    63       automatically by the compiler. But I couldn't resist the

    64       temptation to put in a null reference, simply because it was so

    65       easy to implement. This has led to innumerable errors,

    66       vulnerabilities, and system crashes, which have probably caused

    67       a billion dollars of pain and damage in the last forty years.''

    68       \hfill Sir Tony (Hoare)

    69 \end{bubble}

    70 \end{textblock}

    71   

    72 \begin{textblock}{5}(11.8,1)

    73 \includegraphics[scale=0.20]{hoare.jpg}\\

    74 \end{textblock}

    75   

    76 \end{frame}

    77 

    78 

    79 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    80 \begin{frame}[c]

    81 \frametitle{\huge\textbf{\texttt{return}}}

    82 

    83 \begin{center}\LARGE

    84 you should never use it

    85 \end{center}

    86 

    87 \end{frame}

    88 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     

    89 

    90 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

    91 \begin{frame}[c]

    92 \frametitle{Types}

    93 

    94 \begin{itemize}

    95 \item Base types\smallskip

    96 

    97   \begin{tabular}{@{}l@{}}

    98     \textcolor{codegreen}{\texttt{Int}},

    99     \textcolor{codegreen}{\texttt{Long}},

   100     \textcolor{codegreen}{\texttt{BigInt}},

   101     \textcolor{codegreen}{\texttt{Float}},

   102     \textcolor{codegreen}{\texttt{Double}}\\

   103     \textcolor{codegreen}{\texttt{String}},

   104     \textcolor{codegreen}{\texttt{Char}}\\

   105     \textcolor{codegreen}{\texttt{Boolean}}

   106   \end{tabular}

   107 

   108 \item Compound types \smallskip   

   109 

   110   \begin{tabular}{@{}ll@{}}

   111     \textcolor{codegreen}{\texttt{List[Int]}}     & lists of Int's \\

   112     \textcolor{codegreen}{\texttt{Set[Double]}}   & sets of Double's \\

   113     \textcolor{codegreen}{\texttt{(Int, String)}} & Int-String pair\\

   114     \textcolor{codegreen}{\texttt{List[(BigInt, String)]}} &

   115                                       lists of BigInt-String\\

   116                                       & pairs\\

   117     \textcolor{codegreen}{\texttt{List[List[Int]]}} & list of lists of Int's\\                                  

   118   \end{tabular}

   119 

   120 \end{itemize}  

   121 

   122 \end{frame}

   123 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   

   124 

   125 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

   126 \begin{frame}[c]

   127 \frametitle{\begin{tabular}{c}\\[3cm]\alert{Questions?}\end{tabular}}

   128 

   129 \mbox{}

   130 \end{frame}

   131 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   

   132 \end{document}

   133 

   134 

   135 \end{document}

   136 

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