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\documentclass[dvipsnames,14pt,t,xelatex]{beamer}
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\usepackage{../slides}
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\usepackage{../graphics}
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\usepackage{../langs}
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%\usepackage{../data}
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\hfuzz=220pt
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%\setmonofont[Scale=.88]{Consolas}
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%\newfontfamily{\consolas}{Consolas}
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\lstset{language=Scala,
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style=mystyle,
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numbersep=0pt,
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numbers=none,
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xleftmargin=0mm}
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\newcommand{\bl}[1]{\textcolor{blue}{#1}}
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% beamer stuff
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\renewcommand{\slidecaption}{PEP (Scala) 01, King's College London}
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\begin{document}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[t]
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\frametitle{%
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\begin{tabular}{@ {}c@ {}}
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\\[5mm]
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\huge PEP Scala (1)
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\end{tabular}}
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\normalsize
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\begin{center}
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\begin{tabular}{ll}
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Email: & christian.urban at kcl.ac.uk\\
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Office: & N7.07 (North Wing, Bush House)\\
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Slides \& Code: & KEATS\medskip\\
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Scala Office & \\
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Hours: & Thursdays 11 -- 13\\
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\end{tabular}
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\end{center}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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\frametitle{Why Scala?}
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\begin{textblock}{6}(3,4)
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\begin{tabular}{l}
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\mbox{}\hspace{-1mm}\includegraphics[scale=0.36]{../pics/twitter.png}\\[-1mm]
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\includegraphics[scale=0.30]{../pics/linked.png}\\
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\includegraphics[scale=0.30]{../pics/guardian.jpg}\\[-3mm]
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\mbox{}\hspace{-2mm}\includegraphics[scale=0.38]{../pics/morgan.png}\\[-3mm]
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\includegraphics[scale=0.30]{../pics/suisse.png}\\
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{\large\bf ...}
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\end{tabular}
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\end{textblock}
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\begin{textblock}{6}(9,4)
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\begin{tabular}{l}
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\includegraphics[scale=0.20]{../pics/edf.png}\\[-1mm]
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\includegraphics[scale=0.08]{../pics/novell.png}\\[-1mm]
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\includegraphics[scale=0.30]{../pics/foursquare.png}\\
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\includegraphics[scale=0.30]{../pics/hsbc.png}\\
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{\large\bf ...}
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\end{tabular}
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\end{textblock}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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\frametitle{Why Scala?}
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\begin{itemize}
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\item compiles to the JVM\\
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\textcolor{gray}{(also JavaScript, native X86 in the works)}\medskip
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\item integrates seamlessly with Java\medskip
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\item combines \underline{\bf functional} and {\bf object-oriented} programming\bigskip
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\item it is a bit on the ``mathematical'' side\\
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\textcolor{gray}{(no pointers, no \texttt{null})}
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\item often one can write very concise and elegant code
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\end{itemize}\bigskip\medskip
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\small
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alternatives:\\
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Elm, Haskell, Ocaml, F\sharp, Erlang, ML, Lisp (Racket), \ldots
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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\frametitle{Java vs Scala}
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{\lstset{language=java}\fontsize{12}{12}\selectfont
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\texttt{\lstinputlisting{Point.java}}}
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\rule{11cm}{0.3mm}\\[-2mm]
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{\lstset{language=scala}\fontsize{12}{12}\selectfont
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\texttt{\lstinputlisting{Point.scala}}}
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\begin{textblock}{6}(13,3)
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\textbf{\large Java}
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\end{textblock}
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\begin{textblock}{6}(13,13.4)
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\textbf{\large Scala}
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\end{textblock}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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\frametitle{First Steps: Scala Tools}
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\begin{itemize}
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\item there is a plugin for Eclipse (called Scala IDE)\medskip
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\item there is also a plugin for IntelliJ\medskip
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\item there is a worksheet mode in Eclipse and IntelliJ\bigskip
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\item I use Sublime or venerable Emacs ;o)
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\end{itemize}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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\frametitle{\bf
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\only<1>{\begin{tabular}{l}\\[2mm]Why Scala?\\ \mbox{}\end{tabular}}
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\only<2->{\begin{tabular}{l}\\[2mm]Why Functional\\ Programming?\end{tabular}}
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}
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%
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\mbox{}\\[3.5cm]
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\small
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Scala, Elm, Haskell, Ocaml, F\sharp, Erlang, ML, Lisp (Racket), \ldots
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\only<3>{
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\begin{textblock}{6}(2,6.2)
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\begin{bubble}[10cm]
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\normalsize``If you want to see which features will be in mainstream programming
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languages tomorrow, then take a look at functional programming
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languages today.''\medskip\small\\
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\hfill{}---Simon Peyton Jones (works at Microsoft)\\
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\hfill{}main developer of the Glasgow Haskell Compiler
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\end{bubble}
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\end{textblock}}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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\mbox{}\\[-21mm]\mbox{}
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\begin{center}
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\begin{tikzpicture}[scale=1,
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node/.style={
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rectangle,rounded corners=3mm,
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very thick,draw=black!50,
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minimum height=18mm, minimum width=20mm,
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top color=white,bottom color=black!20}]
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\onslide<1-10>{
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\node (A) at (0,0) [node]
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{\mbox{\includegraphics[scale=0.15]{../pics/cplus2.jpg}}};
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\node [above right] at (A.north west) {1986};}
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\onslide<2->{
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\node (B) at (3.5,0) [node]
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{\mbox{\includegraphics[scale=0.15]{../pics/robotron.jpg}}};
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\node [above right] at (B.north west) {1988, C};
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\draw [->,line width=4mm] (A) -- (B);}
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\onslide<3->{
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\node (C0) at (6.3,0) {};
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\node (C) at (8,0) [node]
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{\mbox{\includegraphics[scale=0.15]{../pics/sun.jpg}}};
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\node [above right] at (C.north west) {1992, {\small Linux}};
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\draw [->,line width=4mm] (B) -- (C0);
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\draw [->,line width=4mm] (C0) -- (C);}
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\onslide<4->{
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\node (D) at (8,-3.3) [node]
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{\mbox{\includegraphics[scale=0.2]{../pics/gateway.jpg}}};
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\draw [->,line width=4mm] (C) -- (D);
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\node [below right] at (D.south west) {1996};}
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\onslide<5->{
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\node (E) at (4,-3.3) [node]
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{\mbox{\includegraphics[scale=0.1]{../pics/appleg4.jpg}}};
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\draw [->,line width=4mm] (D) -- (E);
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\node [above right] at (E.north west) {2000};}
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\onslide<6->{
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\node (F0) at (1.5,-3.3) {};
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\node (F1) at (1,-3.3) {};
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\node (F) at (-0.9,-3.3) [node]
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{\mbox{\includegraphics[scale=0.3]{../pics/appleair.png}}};
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\draw [->,line width=4mm] (E) -- (F0);
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\draw [->,line width=4mm] (F1) -- (F);
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\node [above right] at (F.north west) {2012?};}
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\onslide<7->{
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\node (G) at (-0.9,-6.3) [node]
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{\mbox{\includegraphics[scale=0.02]{../pics/applepro.jpg}}};
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\draw [->,line width=4mm] (F) -- (G);
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\node [right] at (G.west) {\hspace{22mm}2017};}
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\end{tikzpicture}
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\end{center}
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\only<1>{%
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\begin{textblock}{10}(2.5,5)
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\includegraphics[scale=0.26]{../pics/cplus1.jpg}\\
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\footnotesize 64K RAM, no HD, no monitor, lots of cables
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\end{textblock}
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\begin{textblock}{6}(10.9,4.5)
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\includegraphics[scale=0.09]{../pics/mand1.png}
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\includegraphics[scale=0.09]{../pics/mand2.png}
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\end{textblock}
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\begin{textblock}{6}(10.8,2.2)
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\huge\bf 3 days
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\end{textblock}
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}
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\only<8->{%
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\begin{textblock}{8}(5.8,11.6)
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\large\bf
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\begin{tabular}{l@{}l}
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1986:\, & no Internet\\
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& no Amazon\\
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& no FB, no mobiles,\ldots\\
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\end{tabular}
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\end{textblock}
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}
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\only<9>{
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\begin{textblock}{1}(3,3)
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\begin{bubble}[9cm]
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\begin{tabular}{@{\hspace{8mm}}llll@{\hspace{8mm}}}
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\\
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\multicolumn{4}{c}{\bf Speedup by Moore's Law}\medskip\\
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\textbf{1986:} & 3 days & \textbf{1996:} & 135 mins\\
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\textbf{1988:} & 1.5 days & \textbf{1998:} & 67 mins\\
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\textbf{1990:} & 18 hs & \textbf{2000:} & 33 mins\\
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\textbf{1992:} & 9 hs & \textbf{2002:} & 16 mins\\
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\textbf{1994:} & 4.5 hs & \multicolumn{2}{c}{???}\\
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\\
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\end{tabular}
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\small Every two years, computers got twice as powerful.
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\end{bubble}
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\end{textblock}}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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\frametitle{Seq vs Par}
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\begin{center}
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\begin{tabular}[t]{@{}l@{}l@{}}
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\includegraphics[scale=0.14]{../pics/mand4.png} &
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\raisebox{1.2mm}{\includegraphics[scale=0.14]{../pics/mand3.png}}
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\end{tabular}
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\end{center}
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\only<2>{
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\begin{textblock}{5}(12,2)
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\begin{bubble}[2.1cm]
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\footnotesize{}in Java or C++\\
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\includegraphics[scale=0.50]{../pics/skeleton.jpg}\\
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\end{bubble}
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\end{textblock}}
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\only<3>{
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\begin{textblock}{5}(1,8)
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\begin{bubble}[2.1cm]
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\footnotesize{}in Java or C++\\
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\end{bubble}
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\end{textblock}}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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\frametitle{Types}
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\begin{itemize}
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\item Base types\smallskip
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\begin{tabular}{@{}l@{}}
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\textcolor{codegreen}{\texttt{Int}},
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\textcolor{codegreen}{\texttt{Long}},
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\textcolor{codegreen}{\texttt{BigInt}},
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\textcolor{codegreen}{\texttt{Float}},
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\textcolor{codegreen}{\texttt{Double}}\\
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\textcolor{codegreen}{\texttt{String}},
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\textcolor{codegreen}{\texttt{Char}}\\
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\textcolor{codegreen}{\texttt{Boolean}}
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\end{tabular}
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\item Compound types \smallskip
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\begin{tabular}{@{}ll@{}}
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\textcolor{codegreen}{\texttt{List[Int]}} & lists of Int's \\
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\textcolor{codegreen}{\texttt{Set[Double]}} & sets of Double's \\
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\textcolor{codegreen}{\texttt{(Int, String)}} & Int-String pair\\
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\textcolor{codegreen}{\texttt{List[(BigInt, String)]}} &
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lists of BigInt-String\\
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& pairs\\
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\textcolor{codegreen}{\texttt{List[List[Int]]}} & list of lists of Int's\\
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\end{tabular}
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\end{itemize}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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\frametitle{An Http Request}
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\begin{textblock}{1}(2,5)
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\begin{tabular}{c}
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\includegraphics[scale=0.15]{../pics/servers.png}\\[-2mm]
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\small Server
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\end{tabular}
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\end{textblock}
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\begin{textblock}{1}(5.6,4)
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\begin{tikzpicture}[scale=1.1]
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\draw[white] (0,1) node (X) {};
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\draw[white] (2,1) node (Y) {};
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\draw[white] (0,0) node (X1) {};
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\draw[white] (2,0) node (Y1) {};
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\draw[white] (0,-1) node (X2) {};
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\draw[white] (2,-1) node (Y2) {};
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\draw[red, <-, line width = 2mm] (X) -- (Y);
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\node [inner sep=5pt,label=above:\textcolor{black}{GET request}] at ($ (X)!.5!(Y) $) {};
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\draw[red, ->, line width = 2mm] (X1) -- (Y1);
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\node [inner sep=5pt,label=above:\textcolor{black}{webpage}] at ($ (X1)!.5!(Y1) $) {};
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\draw[red, <-, line width = 2mm] (X2) -- (Y2);
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\node [inner sep=7pt,label=above:\textcolor{black}{POST data}] at ($ (X2)!.5!(Y2) $) {};
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\end{tikzpicture}
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\end{textblock}
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\begin{textblock}{1}(9,5.5)
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\begin{tabular}{c}
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\includegraphics[scale=0.15]{../pics/laptop.png}\\[-2mm]
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\small Browser
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\end{tabular}
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\end{textblock}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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379 |
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{\lstset{language=Java}\fontsize{7}{8}\selectfont
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\texttt{\lstinputlisting{URLReader.java}}}
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\only<2>{
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\begin{textblock}{5}(12,2)
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\includegraphics[scale=0.50]{../pics/skeleton.jpg}\\
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\end{textblock}}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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389 |
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33
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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\begin{frame}[c]
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\frametitle{Conclusion}
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\begin{itemize}
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\item Scala is still under heavy development\\ (the compiler is terribly slow)\medskip
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\item {\bf\url{http://www.scala-lang.org/}}\bigskip
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397 |
\item it is a rather \textbf{\alert{deep}} language\ldots i.e.~gives you a lot of
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398 |
rope to shoot yourself\bigskip\bigskip
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399 |
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400 |
\item hope you have fun with the coursework
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401 |
\end{itemize}
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\end{frame}
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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406 |
\begin{frame}[c]
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407 |
\frametitle{\begin{tabular}{c}\\[3cm]\alert{Questions?}\end{tabular}}
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408 |
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409 |
\mbox{}
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410 |
\end{frame}
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411 |
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
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412 |
\end{document}
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32
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414 |
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22
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\end{document}
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416 |
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417 |
%%% Local Variables:
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%%% mode: latex
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419 |
%%% TeX-master: t
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420 |
%%% End:
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