pep-material: comparison handouts/pep-ho.tex

equal deleted inserted replaced

-:f3bfc496d6ca
+:3bfe81972674
 \definecolor{cellbackground}{HTML}{F7F7F7}
 \begin{document}
-\fnote{\copyright{} Christian Urban, King's College London, 2017, 2018, 2019, 2020, 2021}
+\fnote{\copyright{} Christian Urban, King's College London, 2017, 2018, 2019, 2020, 2021, 2022}
 %\begin{tcolorbox}[breakable,size=fbox,boxrule=1pt,pad at break*=1mm,colback=cellbackground,colframe=cellborder]
 %  abd
 %\end{tcolorbox}
 \end{quote}
 \noindent\alert
 Just make sure you are downloading the ``battle tested'' version of
 Scala \textbf{2.13} This is the one I am going to use in the lectures and
-in the coursework. The newer Scala 3.0 \& 3.1 still have some
+in the coursework. The newer Scala 3.1 \& 3.2 still have some
 features not fully implemented.\bigskip
 \noindent
 If you are interested, there are also experimental backends of Scala
 for producing code under Android (\url{http://scala-android.org}); for
 evaluate small code snippets in the Scala REPL. I use the internal
 terminal to run Scala 2.13.6.\label{vscode}}
 \end{boxedminipage}
 \end{figure}
-What I like most about VS Code is that it provides easy access to the
+Actually \alert last year I switched to VS Codium, which is VS Code minus
+all the telemetry that is normally sent to Microsoft. Apart from the
+telemetry,  it works pretty much the same as the original but is driven
+by a dedicated community, rather than a big company. You can download
+VS Codium from
+\begin{quote}
+\url{https://vscodium.com}
+\end{quote}
+What I like most about VS Code/Codium is that it provides easy access to the
 Scala REPL. But if you prefer another editor for coding, it is also
 painless to work with Scala completely on the command line (as you might
 have done with \texttt{g++} in the earlier part of PEP). For the
 lazybones among us, there are even online editors and environments for
 developing and running Scala programs: \textit{ScalaFiddle}
 \noindent
 But you should be careful if you use them for your coursework: they
 are meant to play around, not really for serious work.
-As one might expect, Scala can be used with the heavy-duty IDEs Eclipse and IntelliJ.
+As one might expect, Scala can be used with the heavy-duty IDEs
-A ready-made Scala bundle for Eclipse is available from
+Eclipse and IntelliJ.  A ready-made Scala bundle for Eclipse is
+available from
 \begin{quote}
 \url{http://scala-ide.org/download/sdk.html}
 \end{quote}
 laziness, implicits, algebraic datatypes  to name a few. Imperative
 languages seem to often lag behind in adopting them: I know, for
 example, that Java will at some point in the future support
 pattern-matching, which has been used for example in SML for at least
 40(!) years. See
-\url{http://cr.openjdk.java.net/~briangoetz/amber/pattern-match.html}.
+\url{https://openjdk.org/projects/amber/design-notes/patterns/pattern-matching-for-java}.
 Automatic garbage collection was included in Java in 1995; the
 functional language LISP had this already in 1958. Generics were added
 to Java 5 in 2004; the functional language SML had it since 1990.
 Higher-order functions were added to C\# in 2007, to Java 8 in
 2014; again LISP had them since 1958. Also Rust, a C-like programming
 language that has been developed since 2010 and is gaining quite some
 interest, borrows many ideas from functional programming from
 yesteryear.}\medskip
 \noindent
-If you need any after-work distractions, you might have fun reading this
+If you need any after-work distractions, you might have fun reading
-about FP (functional programming):
+this about FP (functional programming) --- you
+might have to disable your browser cookies though if you want to read
+it for free. And spoiler alert: This is tongue-in-cheek \texttt{;o)}
 \begin{quote}
-\url{https://medium.com/better-programming/fp-toy-7f52ea0a947e}
+\url{https://betterprogramming.pub/fp-toy-7f52ea0a947e}
 \end{quote}
 \subsection*{The Very Basics}
 One advantage of Scala over Java is that it includes an interpreter (a
 programs. Once you installed Scala, you can start the interpreter by
 typing on the command line:
 \begin{lstlisting}[language={},numbers=none,basicstyle=\ttfamily\small]
 $ scala
-Welcome to Scala 2.13.6 (OpenJDK 64-Bit Server VM, Java 17).
+Welcome to Scala 2.13.9 (OpenJDK 64-Bit Server VM, Java 17.0.1).
 Type in expressions for evaluation. Or try :help.
 scala>
 \end{lstlisting}%$
 list.foreach(item -> System.out.println("* " + item));
 /*!\annotation{Java}!*/
 \end{lstlisting}
 \noindent
-In Scala, we use the \code{=>} symbol:
+In Scala, we use the \code{=>} symbol for the same:
 \begin{lstlisting}[language=Scala]
 list.foreach(item => println(s"* $item"))/*!\annotation{Scala}!*/
 \end{lstlisting}%$
 \end{boxedminipage}
 production code, but then moved away from it. Allegedly they did not
 like the steep learning curve of Scala and also that new versions of
 Scala often introduced incompatibilities in old code. Also the Java
 language is lately developing at lightening speed (in comparison to the past)
 taking on many
-features of Scala and other languages, and it seems even it introduces
+features of Scala and other languages, and it seems it even introduces
 new features on its own.
 Scala is deep: After many years, I still continue to learn new technique
-for writing more elegant code.
+for writing more elegant code. Unfortunately, I have not yet managed to
+switch over my code to Scala 3.0 due to time constraints. Scala 3 seems
+to iron out a number of snags from Scala 2, but why on earth are they
+introducing Python-esque intendation and why on earth are they
+re-introducing the \texttt{then}-keyword in Scala 3, when I just about got
+comfortable without it?
 %So all in all, Scala might not be a great teaching language,
 %but I hope this is mitigated by the fact that I never require
 %you to write any Scala code. You only need to be able to read
 %it. In the coursework you can use any programming language you

changeset 441	3bfe81972674
parent 426	b51467741af2
child 442	c86e7dd198bf