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--- a/handouts/ho01.tex	Fri May 01 21:30:13 2015 +0100
+++ b/handouts/ho01.tex	Thu Sep 24 15:58:48 2015 +0100
@@ -16,7 +16,7 @@
 Knuth-Morris-Pratt algorithm, which is currently the most
 efficient general string search algorithm. But often we do
 \emph{not} just look for a particular string, but for string
-patterns. For example in programming code we need to identify
+patterns. For example in program code we need to identify
 what are the keywords, what are the identifiers etc. A pattern
 for identifiers could be stated as: they start with a letter,
 followed by zero or more letters, numbers and underscores.
@@ -69,11 +69,12 @@
 disposable.style.email.with+symbol@example.com
 \end{lstlisting}
 
-As mentioned above, identifiers, or variables, in program text are often required
-to satisfy the constraints that they start with a letter and
-then can be followed by zero or more letters or numbers and
-also can include underscores, but not as the first character.
-Such identifiers can be recognised with the regular expression
+As mentioned above, identifiers, or variables, in program code
+are often required to satisfy the constraints that they start
+with a letter and then can be followed by zero or more letters
+or numbers and also can include underscores, but not as the
+first character. Such identifiers can be recognised with the
+regular expression
 
 \begin{center}
 \pcode{[a-zA-Z] [a-zA-Z0-9_]*}

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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/handouts/ho07.tex	Thu Sep 24 15:58:48 2015 +0100
@@ -0,0 +1,17 @@
+\documentclass{article}
+\usepackage{../style}
+\usepackage{../langs}
+
+
+\begin{document}
+
+\section*{Handout 7 (Compiling)}
+
+
+
+\end{document}
+
+%%% Local Variables: 
+%%% mode: latex  
+%%% TeX-master: t
+%%% End: 

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--- a/slides/slides01.tex	Fri May 01 21:30:13 2015 +0100
+++ b/slides/slides01.tex	Thu Sep 24 15:58:48 2015 +0100
@@ -241,7 +241,7 @@
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \begin{frame}[c]
-\frametitle{Lectures 1 - 6}
+\frametitle{Lectures 1 - 5}
 
 transforming strings into structured data\\[10mm]
 
@@ -305,7 +305,7 @@
 \begin{itemize}
 \item a web-crawler
 \item an email harvester
-\item a web-scraper
+\item \textcolor{gray}{a web-scraper}
 \end{itemize}
 
 \end{frame}

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--- a/style.sty	Fri May 01 21:30:13 2015 +0100
+++ b/style.sty	Thu Sep 24 15:58:48 2015 +0100
@@ -9,6 +9,8 @@
 \definecolor{darkblue}{rgb}{0,0,0.6}
 \usepackage[colorlinks=true,urlcolor=darkblue,linkcolor=darkblue]{hyperref}
 
+%%% for trees
+%% http://anorien.csc.warwick.ac.uk/mirrors/CTAN/graphics/pgf/contrib/forest/forest.pdf
 
 \newcommand\grid[1]{%
 \begin{tikzpicture}[baseline=(char.base)]