Your Setup

Option 1: Install Scala CLI

• How to install
• The Scala-CLI website
• Show download options
• Mac/Windows/Linux installs
• scala-cli is becoming the new scala

Option 2: Scastie

• The Scastie website
• Works like the REPL
• Need to use println more
• Configuration options
• Mention that it uses sbt
  • Also sends your code somewhere to be compiled

If you want to start with Scastie, that’s fine. Will need to use scala-cli later for scripts and applications.

Exercises and examples

• Exercises are here
• Related examples on Github

Those were both created for my book, Learn Scala 3 The Fast Way!

Significant Indentation Syntax

• different from Scala 2
• I indent with 4 spaces
  • easier to read, especially in books
  • not the Scala standard
• Curly braces
  • Anything in curly braces is a block of code
  • The result of a BoC is the value of the last expression

Comments

• They’re the same as C, Java, and most other languages