EduByte.tech
Start learning
Scala·Scala essentials

Values and types

Scala has a rich type system with Option for absence and case classes for data.

Intermediate 10 min read Lesson 2 of 150 Challenge included
What you will be able to do
  • Use Option instead of null.
  • Case classes give equals and toString.
  • Pattern match to extract values.

In plain English

Scala has a rich type system with Option for absence and case classes for data.

  • Use Option instead of null.
  • Case classes give equals and toString.
  • Pattern match to extract values.
Types.scalaSCALA
case class Lesson(title: String, minutes: Int)
val lesson = Lesson("CSS", 18)
val maybe: Option[String] = Some("ready")
println(lesson.title, maybe.getOrElse("none"))
Your turn

Explain it back

Easy

Answer from memory: What does Option represent?

TEXT · starter
Your answer…
Check your understanding before moving on.
Knowledge checkQuestion 1

What does Option represent?

Select an answer to continue
Study tools

Make it yours.

Keep a private note for this lesson, then turn the key ideas into flashcards you can revisit.

Sign in to save notes and flashcards.Both are private to your account and stay with your progress.
Sign in
Finished reading?

Lock in what you just learned.

Mark this lesson complete to save your place and move one step closer to the certificate.

Next: Control flow
Lesson 2 of 150 · 0% of course