Conversion

case class

case class Person(name: String)
  def greet(): String = s"Hello, $name"

given fromStringToPerson: Conversion[String, Person] = Person(_)

@main def run =
  println("John".greet())

Scope

The conversion rules are the same as the given rules

1. imported conversion
2. current scope
3. companion object

Exercises

Exercise 1

case class Person(name: String)
  def greet(): String = s"Hello, $name"

1. Write a conversion function from Person to Int that calculate the length of the name
2. Put it in a separate object
3. Use it with an import

Exercise 2

case class User(name: String)
  def login(): String = s"Logged in: $name"

1. Write a conversion from Person to User
2. Write a conversion from User to Person
3. Test both