# HG changeset patch
# User Christian Urban <christian.urban@kcl.ac.uk>
# Date 1695850939 -3600
# Node ID 0fe0937e049df165a93c90cc0a07df32edd78924
# Parent  9541e073f2ed239c45f169971127996d415210a7
updated

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diff -r 9541e073f2ed -r 0fe0937e049d pics/chatgpt1.png
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diff -r 9541e073f2ed -r 0fe0937e049d pics/r1.pdf
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diff -r 9541e073f2ed -r 0fe0937e049d pics/r2.pdf
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diff -r 9541e073f2ed -r 0fe0937e049d pics/rust-regex.png
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diff -r 9541e073f2ed -r 0fe0937e049d slides/slides01.pdf
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diff -r 9541e073f2ed -r 0fe0937e049d slides/slides01.tex
--- a/slides/slides01.tex	Mon Sep 25 15:12:11 2023 +0100
+++ b/slides/slides01.tex	Wed Sep 27 22:42:19 2023 +0100
@@ -5,6 +5,7 @@
 \usepackage{../langs}
 \usepackage{../data}
 \usetikzlibrary{cd}
+\usepackage{listings-rust}
 
 
 \usepackage{tcolorbox}
@@ -253,7 +254,7 @@
   \begin{center}
   \begin{tabular}{ll}
   Email:  & christian.urban at kcl.ac.uk\\
-  Office Hour: & Fridays 11 -- 12\\
+  Office Hour: & Thurdays 15 -- 16\\
   Location: & N7.07 (North Wing, Bush House)\\
   Slides \& Progs: & KEATS\\
   Pollev: & \texttt{\alert{https://pollev.com/cfltutoratki576}}\\  
@@ -476,31 +477,31 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-{
-\setbeamercolor{background canvas}{bg=cream}
-\begin{frame}[c]
+% {
+% \setbeamercolor{background canvas}{bg=cream}
+% \begin{frame}[c]
 
-\frametitle{}
-\begin{mybox3}{}\it
-   ``I enjoyed the module - it was genuinely the stand out academic
-experience of my undergraduate degree, and very much influenced my
-career interests. In fact I am currently working at ARM, in their Open
-Source Software group, on AArch64 specific optimisations for the
-Java/Kotlin compiler that forms part of the Android Runtime.''\\
-\mbox{}\hfill-- Hari Limaye in year 2021/22
-\end{mybox3}\pause
+% \frametitle{}
+% \begin{mybox3}{}\it
+%    ``I enjoyed the module - it was genuinely the stand out academic
+% experience of my undergraduate degree, and very much influenced my
+% career interests. In fact I am currently working at ARM, in their Open
+% Source Software group, on AArch64 specific optimisations for the
+% Java/Kotlin compiler that forms part of the Android Runtime.''\\
+% \mbox{}\hfill-- Hari Limaye in year 2021/22
+% \end{mybox3}\pause
 
 
-Student numbers in CFL\medskip\\
-\begin{tabular}{ll}
-2019: & 32\\  
-2020: & 59\\  
-2021: & 109\\
-2022: & 121\\  
-\end{tabular}  
+% Student numbers in CFL\medskip\\
+% \begin{tabular}{ll}
+% 2019: & 32\\  
+% 2020: & 59\\  
+% 2021: & 109\\
+% 2022: & 121\\  
+% \end{tabular}  
 
-\end{frame}
-}
+% \end{frame}
+% }
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
 
@@ -637,7 +638,7 @@
 \begin{frame}[c]
 \frametitle{Some Housekeeping}
 
-\textbf{Exam will be online:}\bigskip
+\textbf{Exam will be computer-based, invigilated in some big examination hall:}\bigskip
 
 \begin{itemize}
 \item final exam in January (35\%)
@@ -655,12 +656,56 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+{\definecolor{rred}{HTML}{C0504D}
+\setbeamercolor{background canvas}{bg=cream}
+\begin{frame}[c]
+\frametitle{Students in CFL}
+
+\begin{center}
+\begin{tikzpicture}
+  \begin{axis}[symbolic x coords={2016,2017,2018,2019,2020,2021,2022,2023},
+    width  = \textwidth,
+    height = 5cm,
+    bar width=8mm,
+    nodes near coords,
+    axis lines = left,
+    text=black,
+    ymin=0,
+    clip=false,
+    hide y axis,
+    axis line style={-},
+    name=mygraph
+    ]
+    
+\addplot[ybar,style={rred,fill=rred!75,mark=none},text=black] coordinates {
+(2023,183)
+(2022,112)
+(2021,98)
+(2020,59)
+(2019,38)
+(2018,20)
+(2017,22)
+(2016,8)};
+\end{axis}
+\node[anchor=north, yshift=-10mm] at (mygraph.south) {\small{}Student numbers since the start of the compiler module.};
+
+\end{tikzpicture}
+\end{center}
+
+
+\end{frame}
+}
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
 {
 \setbeamercolor{background canvas}{bg=cream}
 \begin{frame}[c]
 \frametitle{Homework}
 
-Until 2 years ago: I did not give out solutions; students sent emails to me and I responded to them individually.\bigskip\\
+Until 2 years ago: I did not give out solutions; students
+sent emails to me and I responded to them individually.\bigskip\\
 
 
 Since last year: We will review the homework mainly during the SGTs.\bigskip\\\pause
@@ -685,11 +730,58 @@
 \item LLVM compiler (25\%) 
 \end{itemize}\bigskip\pause
 
-you can use \alert{any} programming language you like (Haskell, Rust)\\\pause
+you can use \alert{any} programming language you like (Haskell, Rust, Swift)\\\pause
 you can use any code I show you and is uploaded to KEATS\ldots\textbf{BUT NOTHING ELSE!}
 
 \end{frame}
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+{
+\setbeamercolor{background canvas}{bg=cream}
+\begin{frame}[c,fragile]
+\frametitle{Ammonite \& Scala 3}
+
+I will show you all my code in Amm / Scala 3
+
+\begin{minipage}{1.4\textwidth}
+\begin{lstlisting}[language={},numbers=none,basicstyle=\ttfamily\small]
+$ amm
+Loading...
+Welcome to the Ammonite Repl 2.5.9 (Scala 3.2.2 Java 17.0.7)
+scala> 1 + 2
+res0: Int = 3
+\end{lstlisting} %% $
+\end{minipage}\medskip
+\pause
+
+Do not use Amm + Scala 2!
+
+\begin{minipage}{1.4\textwidth}
+\begin{lstlisting}[language={},numbers=none,basicstyle=\ttfamily\small]
+$ amm2
+Loading...
+Welcome to the Ammonite Repl 2.5.9 (Scala 2.13.11 Java 17.0.7)
+scala> 
+\end{lstlisting} %% $
+\end{minipage}
+\end{frame}
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+{
+\setbeamercolor{background canvas}{bg=cream}
+\begin{frame}[c]
+\frametitle{For problems}
+
+\begin{itemize}
+\item Harry Dilnot
+\item Meilai  
+\end{itemize}
+  
+\end{frame}
+}
+
+
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[c]
@@ -991,6 +1083,126 @@
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+{
+\setbeamercolor{background canvas}{bg=cream}
+\begin{frame}[c]
+\frametitle{Rust vs.~Scala (from PEP)}
+
+\mbox{}
+
+\begin{minipage}{1.3\textwidth}
+\begin{mybox3}{}\it\small
+\textbf{Re: Another question of purely academic interest about regex implementation in cw3}
+
+This conversation is interesting to me, and I've researched it a
+little bit [...] I also disagree with Dr.~Urban on the cost/benefit of
+non-GC languages [...]\smallskip
+
+But regardless, Scala is a lot slower than, say, C or Rust. To say
+it's not is basically wrong (imo). Perhaps one could argue that some
+of the guarantees Scala has makes it easier to write multi-threaded
+programs that utilise more of the CPU... but, in my opinion, this is
+also a bit misleading. Most CPUs have something like 4 to 12 cores
+nowadays. It's very possible that a given Scala program runs 4-12x
+slower than its Rust equivalent. Would you rather have your program
+run quickly and use a single core, or have it run equally
+quickly... and... hog your entire CPU for its duration?\ldots{}
+
+\mbox{}\hfill-- Oliver Iliffe,  discussion from PEP
+\end{mybox3}
+\end{minipage}
+
+\end{frame}
+}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+{
+\setbeamercolor{background canvas}{bg=cream}
+\begin{frame}[c]
+\frametitle{Regex Lib in Rust}
+
+\begin{center}
+\includegraphics[scale=0.34]{../pics/rust-regex.png}
+\end{center}
+
+\end{frame}
+}
+
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+{
+\setbeamercolor{background canvas}{bg=cream}
+\begin{frame}[c,fragile]
+
+\begin{columns}[t,onlytextwidth]
+\begin{column}{1\textwidth}
+\small re: \bl{$(abc)^{\{n\}}$}\quad str: \bl{$\underbrace{abc\ldots{}abc}_n$}\medskip\\  
+\begin{tikzpicture}\footnotesize
+\begin{axis}[
+    xlabel={$n$},
+    x label style={at={(1.07,0.0)}},
+    ylabel={time in secs},
+    enlargelimits=false,
+    xmax=65000,
+    ymax=100,
+    xtick={0,15000,...,60000},
+    ytick={0,10,...,90},
+    scaled ticks=false,
+    axis lines=left,
+    width=7cm,
+    height=5cm]
+    \addplot[black,mark=square*,mark options={fill=red}] table [x=x, y=y, col sep=comma, row sep=crcr]
+    {x, y\\
+      0, 0\\
+     5000, 0.487\\ 
+     10000, 1.650\\
+     15000, 3.617\\
+     20000, 6.462\\
+     25000, 10.736\\
+     30000, 17.665\\
+     35000, 25.662\\
+     40000, 36.422\\
+     45000, 49.119\\
+     50000, 62.058\\
+     55000, 75.941\\
+     60000, 93.022\\
+    };
+\end{axis}
+\end{tikzpicture}
+\end{column}
+\end{columns}
+
+\begin{textblock}{10}(8.4,3.8)
+\tiny  
+\begin{lstlisting}[language=Rust]
+extern crate regex;
+
+use regex::Regex;
+use std::time::Instant;
+
+// bounded regular expression example
+
+fn main() {
+   for bound in (0..=60000).step_by(5000) {
+   
+      let re = Regex::new(&format!("(abc){{{}}}", bound)).unwrap();
+      let text = "abc".repeat(bound);
+
+      let start_time = Instant::now();
+      let is_match = re.is_match(&text);
+      let elapsed_time = start_time.elapsed().as_secs_f64();
+
+      println!("Bound: {}, Match: {}, Time: {} seconds", bound, is_match, elapsed_time);
+   }
+}
+\end{lstlisting}    
+\end{textblock}
+\end{frame}
+}  
+
+
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %\begin{frame}[c]
@@ -1512,6 +1724,29 @@
 \end{frame}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%  
 
+{
+\setbeamercolor{background canvas}{bg=cream}
+\begin{frame}[c]
+
+\begin{minipage}{1.3\textwidth}
+
+\end{minipage}
+\includegraphics[scale=0.4]{../pics/chatgpt.png}
+\end{frame}
+}
+
+{
+\setbeamercolor{background canvas}{bg=cream}
+\begin{frame}[c]
+\frametitle{\dots{}for amusement}
+
+\begin{minipage}{1.3\textwidth}
+\includegraphics[scale=0.4]{../pics/chatgpt1.png}
+\end{minipage}
+
+\end{frame}
+}
+
 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
diff -r 9541e073f2ed -r 0fe0937e049d slides/slides02.tex
--- a/slides/slides02.tex	Mon Sep 25 15:12:11 2023 +0100
+++ b/slides/slides02.tex	Wed Sep 27 22:42:19 2023 +0100
@@ -43,7 +43,7 @@
   \begin{center}
   \begin{tabular}{ll}
   Email:  & christian.urban at kcl.ac.uk\\
-  Office Hour: & Fridays 11 -- 12\\
+  Office Hour: & Thurdays 15 -- 16\\  
   Location: & N7.07 (North Wing, Bush House)\\
   Slides \& Progs: & KEATS\\
   Pollev: & \texttt{\alert{https://pollev.com/cfltutoratki576}}\\