Small program
Combine case classes, filtering and a result summary.
What you will be able to do
- Model data with a case class.
- Filter with a predicate.
- Print a summary.
In plain English
Combine case classes, filtering and a result summary.
- Model data with a case class.
- Filter with a predicate.
- Print a summary.
case class Course(title: String, minutes: Int)
val courses = List(Course("HTML", 12), Course("CSS", 18))
val long = courses.filter(_.minutes >= 15)
println(s"${long.length} long courses")Your turn
EasyExplain it back
Answer from memory: Which method keeps elements that match a predicate?
TEXT · starter
Your answer…Check your understanding before moving on.
Knowledge checkQuestion 1
Which method keeps elements that match a predicate?
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 inFinished reading?
Lock in what you just learned.
0%
Mark this lesson complete to save your place and move one step closer to the certificate.