Merge branch 'setup' into 'master'

Website setup

See merge request lamp/cs-210-functional-programming-2019!1

README.md

-# CS-210 Material
+This repository will be used as the website for Functional Programming CS-210. It will be updated weekly throughout the semester. This README contains general information about the class.
 
-* [Moodle Page](https://moodle.epfl.ch/course/view.php?id=14257)
+- [previous-years-exams](https://gitlab.epfl.ch/lamp/cs210-material/week1/tree/master/previous-years-exams) contains PDFs for the 2016, 2017 and 2018 exams.
+- [recitation-sessions](https://gitlab.epfl.ch/lamp/cs210-material/week1/tree/master/recitation-sessions) contains markdown documents for recitation sessions and solutions.
+- [slides](https://gitlab.epfl.ch/lamp/cs210-material/week1/tree/master/slides
+) contains the slides presented in class.
+
+We will use GitLab's issue tracker as a discussion forum. Feel free to [open an issue](https://gitlab.epfl.ch/lamp/cs-210-functional-programming-2019/issues/new) if you have any comments or questions.
+
+During the first week of the semester, you should will this Doodle to register to the recitation sessions:
+
+- [https://doodle.com/poll/x3iyh8czww2pcat9](https://doodle.com/poll/x3iyh8czww2pcat9)
+
+Also make sure to read the [instructions to install Git and Scala on your
+machine](tools-setup.md), which are needed to complete the projects.
+
+## Grading
+
+The grading of the course is divided between projects (30%), a midterm (30%), and a final exam (40%) held during the last week of courses.
+
+## Staff
+
+| Role        | People |
+| :---        | :--- |
+| Professors  | Martin Odersky, Viktor Kunčak |
+| TAs         | Aleksander Boruch-Gruszecki, Guillaume Martres, Nicolas Stucki, Olivier Blanvillain, Periklis Chrysogelos |
+| Student TAs | Artur Vignon, Haley Owsianko, Paul Renauld, Thomas De Chevigny, Timothée Floure |
+
+## Rooms
+
+Live lectures take place on Wednesdays from 13:15 to 15:00 in CO 2. Recitation sessions take place on Fridays from 10:15 to 12:00, where the room assignment is according to the Doodle linked above. Project sessions are held concurrently to the recitation sessions in CO 021.
+
+## Lecture Schedule
+
+| Week | Date        | Topic                  |
+| :--  | :--         | :--                    |
+| 1    | 18.09.2019  | Intro class            |
+| 2    | 25.09.2019  | Recursion              |
+| 3    | 02.10.2019  | Function values        |
+| 4    | 09.10.2019  | Classes                |
+| 5    | 16.10.2019  | Symbolic computations  |
+| 6    | 23.10.2019  | Collection             |
+| 7    | 30.10.2019  | Structural induction   |
+| 8    | 06.11.2019  | Monads                 |
+| 9    | 13.11.2019  | State                  |
+| 10   | 20.11.2019  | Constraints            |
+| 11   | 27.11.2019  | Lambda calculus / Lisp |
+| 12   | 04.12.2019  | Scheme interpreter     |
+| 13   | 11.12.2019  | Prolog                 |
+| 14   | 18.12.2019  | Review                 |
+
+## Project Schedule
+
+| Title                | Start Date | Due Date (at noon) |
+| :--                  | :--        | :--                |
+| Recursion            | 18.09.2019 | 26.09.2019         |
+| Functional Sets      | 25.09.2019 | 03.10.2019         |
+| Object-Oriented Sets | 02.10.2019 | 10.10.2019         |
+| Huffman Coding       | 09.10.2019 | 24.10.2019         |
+| Anagrams             | 16.10.2019 | 31.10.2019         |
+| Bloxorz              | 23.10.2019 | 07.11.2019         |
+| Quickcheck           | 30.10.2019 | 14.11.2019         |
+| Calculator           | 13.11.2019 | 28.11.2019         |
+| Interpreter          | 27.11.2019 | 18.12.2019         |
+
+## Exam Schedule
+
+The midterm exam will take place on Friday 08.11.2019 from 10:15 to 12:00.
+The final exam will take place on Friday 20.12.2019 from 10:15 to 12:00.
+
+Information about exam organization will be communicated by email a few days before each exam.

recitation-sessions/recitation-session-1.md

+# Recitation Session 1
+
+We will work on tail recursion in this session.
+
+## Exercise 1: Factorial
+
+Recall the factorial function that you saw in class
+
+```scala
+def factorial(n: Int): Int = if (n <= 0) 1 else n * factorial(n - 1)
+```
+
+Define a tail recursive version of it
+
+```scala
+def factorial(n: Int): Int = fact(n, 1)
+@tailrec
+def fact(n: Int, acc: Int): Int = ???
+```
+
+What would be the advantage of making `fact` an inner function to `factorial`?
+
+## Exercise 2: Sum of elements on a list
+
+Define a function that takes a list of integers and sums them. You can use the functions `head`, `tail`, and `isEmpty` on lists, as you have seen for your homework.
+
+```scala
+def sumList(ls: List[Int]): Int = ???
+```
+
+Convert your definition into a tail-recursive one.
+
+## Exercise 3: Fast exponentiation
+
+Fast exponentiation is a technique to optimize the exponentiation of numbers:
+
+```
+b²ⁿ = (b²)ⁿ = (bⁿ)²
+b²ⁿ⁺¹ = b * b²ⁿ
+```
+
+Define a function that implements this fast exponentiation. Can you define a tail recursive version as well?
+
+```scala
+def fastExp(base: Int, exp: Int): Int = ???
+```
+
+## Exercise 4: Tail recursive Fibonacci
+
+Define a function that computes the nth Fibonacci number. Can you define a tail recursive version as well? The Fibonacci recurrence is given as follows:
+
+```
+fib(n) = 1 | n = 0, 1
+fib(n) = fib(n - 1) + fib(n - 2) | otherwise
+```
+
+```scala
+def fibonacci(n: Int): Int = ???
+```

tools-setup.md

+# Tools Setup
+
+# Step 1: Create an account on gitlab.epfl.ch
+
+Go to [gitlab.epfl.ch](gitlab.epfl.ch) and log in with your EPFL account, do this as soon as
+possible because it will take some time between the account creation and the
+assignment submission system working for your account.
+
+## Step 2: Installing the Java Development Kit (JDK)
+
+### On Linux
+#### On Ubuntu and Debian
+
+```shell
+sudo apt-get install openjdk-8-jdk
+sudo update-java-alternatives --set /usr/lib/jvm/java-1.8.0-openjdk-amd64
+```
+
+#### On Fedora
+```shell
+sudo dnf install java-1.8.0-openjdk-devel
+```
+
+### On macOS
+
+macOS either comes with a pre-installed JDK, or installs it automatically. To verify your JDK installation, open the Terminal and type `java -version`. If the JDK is not yet installed, the system will ask you if you would like to download and install it. Make sure you install Java 1.8.
+
+### On Windows
+
+[Download and run the JDK 8 installer for Windows from Oracle's website.](http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html)
+
+## Step 3: Verify your JDK installation
+
+In a terminal, run:
+```shell
+java -version
+```
+The version number displayed on the first line should start with `1.8`. If this is not the case, then the wrong version of Java is on your `$PATH`.
+See [https://www.java.com/en/download/help/path.xml](https://www.java.com/en/download/help/path.xml) for information on how to change this.
+
+
+## Step 4: Installing sbt
+
+`sbt` is the build tool we use to compile and run Scala programs.
+
+### On Linux
+
+See [https://www.scala-sbt.org/1.x/docs/Installing-sbt-on-Linux.html](https://www.scala-sbt.org/1.x/docs/Installing-sbt-on-Linux.html).
+
+### On macOS
+
+First, install Homebrew from [https://brew.sh](https://brew.sh) Then run:
+
+```terminal
+brew install sbt@1
+```
+
+### On Windows
+
+Download and run [https://piccolo.link/sbt-1.2.7.msi](https://piccolo.link/sbt-1.2.7.msi)
+
+## Step 5: Installing git
+
+git is a version control system.
+
+See [https://git-scm.com/book/en/v2/Getting-Started-Installing-Git](https://git-scm.com/book/en/v2/Getting-Started-Installing-Git)
+
+
+Once git is installed, please run:
+
+```shell
+git config --global core.autocrlf false
+```
+
+## Step 6: Installing VSCode
+
+VSCode is the IDE we strongly recommend using for this class (you are free to use any editor you want, but we won't don't have the resources to help you configure it for Scala).
+
+### On Linux
+
+See [https://code.visualstudio.com/docs/setup/linux](https://code.visualstudio.com/docs/setup/linux)
+
+### On macOS
+
+See [https://code.visualstudio.com/docs/setup/mac](https://code.visualstudio.com/docs/setup/linux).
+Make sure to follow both the "Installation" and "Launching from the Command Line" parts of the setup!
+
+### On Windows
+
+See [https://code.visualstudio.com/docs/setup/windows](https://code.visualstudio.com/docs/setup/linux).
+Make sure that the checkbox "Add to PATH (available after restart)" in the installer is checked.
+
+## Step 7: Verify your VSCode installation
+
+Run:
+```shell
+code
+```
+VSCode is correctly installed if this opens a window, you can then close this window.
+
+## Step 8: Generate a public/private SSH key pair
+
+To submit assignments, you will need an SSH key. If you don't already have one, here's how to generate it:
+
+### Installing OpenSSH
+
+#### Ubuntu and Debian
+
+```shell
+sudo apt-get install openssh-client
+```
+
+#### macOS
+
+Nothing to do, OpenSSH is pre-installed
+
+#### Windows
+
+The simplest solution is to have an up-to-date Windows 10 and follow [https://www.howtogeek.com/336775/how-to-enable-and-use-windows-10s-built-in-ssh-commands/](https://www.howtogeek.com/336775/how-to-enable-and-use-windows-10s-built-in-ssh-commands/).
+
+### Generating the key pair
+
+```shell
+ssh-keygen -t rsa -b 4096 -C "youremail@example.com"
+```
+
+ The command will then ask for a location, which you can leave as the default. It will then also ask for a passphrase to encrypt your private key, which you may leave empty. If you don't, make sure to remember your passphrase!
+
+### Adding your public key on Gitlab
+
+To be able to push your code, you'll need to add the public part of your key on Gitlab:
+- Go to gitlab.epfl.ch, log in with your EPFL account
+- Go to gitlab.epfl.ch/profile/keys and copy-paste the content of the `id_rsa.pub` file created by the `ssh-keygen` command you just ran (when the command was ran it printed the location where this file was saved).
+- Press `Add key`
+
+## Step 9: Follow the example assignment
+
+The description of the example assignment (in your personnal gitlab repository) contains critical information to properly use the tools you just installed, don't miss it!