Scala案例类是否有Map支持？

Question

Scala case classes essentially capture a set of fields with helping methods. How are case classes resolved? Are they expanded to different classes with fields or a generic class that contains, say, a HashMap<String, Field> ?

If it's the latter, are case classes with single field more expensive than explicitly defined data objects?

Answer 1

Case classes are exactly the same as regular classes, except that they offer some additional convenience functions. No, they are not backed by a map. What made you think that they are?