Course: Scala for beginners

Preparation

1. Make sure you have Java Runtime Environment 1.8 or newer installed (https://www.java.com/en/download/)

2. Download SBT (sbt-extras is recommended)

   curl -L -o sbt https://raw.githubusercontent.com/paulp/sbt-extras/master/sbt && chmod +x sbt
   sudo ln -s $(pwd)/sbt /usr/local/bin/sbt

3. (Optional) Download Ammonite REPL

   curl -L -o amm https://git.io/vP4Gw && chmod +x amm
   sudo ln -s $(pwd)/amm /usr/local/bin/amm

4. (Optional) Install IntelliJ IDEA Community Edition (https://www.jetbrains.com/idea/download)

5. Clone this repository

   git clone 'https://github.com/michalsenkyr/scala-course.git'

Viewing the slides

Slides are available in reveal.js (Czech) as well as in Markdown (Czech)

Executing examples using SBT

1. Run the sbt command in the scala-course/examples directory
2. Switch to the appropriate subproject (eg. project variables)
3. Run the example: run
   • SBT will automatically find all the runnable classes and gives you a choice of which to run
   • For the duplicateFinder subproject, you will need to specify directories to find duplicates in, paths can be either absolute or relative to the duplicateFinder subproject directory: run test

Trying out code using the Ammonite REPL

Run the amm command in any directory

Subprojects

• variables - Contains examples of defining and using variables (slide 10)
• classes - Contains examples of defining classes/objects and their members (slides 11-18)
• patternMatching - Contains examples of pattern matching (slides 20-21)
• collections - Contains examples of constructing and using collections (slides 22-29)
• forComprehensions - Contains examples of for-comprehensions (slide 30)
• implicits - Contains examples of implicit classes (slide 31)
• duplicateFinder - Contains the solutions for the duplicate file finder exercise (slide 36)
  • Solutions include Scala with and without Java 8 as well as pure Java (with and without Java 8) for comparison
• tuplesGame - Contains the solution for the Tuples game exercise (slide 37)