Here is my code. The idea is that the grades go from 0-5 and it cannot go higher, thus the if command.
Highlighted in the code is the part that apparently is not allowed anymore (grade > 5)- I get a syntax error that says: “This construct is not allowed under -new-syntax.”

I don’t get why a match type is not always reduced. Match types should help to eliminate illegal arguments on compilation. But as it turns out it does not always reduce in full.

Look at the following method

Context One of the differences between Scala 2 and Scala 3 is the syntax for varargs splices. So given def combine(strings: String*): Unit = { println(strings.mkString(“; “)) } val list = List(“a”, “b”) In Scala 2 one can call the function with: combine((list ++ list): _*) In Scala 3 the syntax is: combine((list ++ list)*) […]

Following code imports the same symbol twice, because it imports two different objects which both export it:

The ValueOf type function can be used in the contextual parameters list of a method to pick the single inhabitant of singleton type.