case-class

Is there a nice way I can convert a Scala case class instance, e.g. case class MyClass(param1: String, param2: String) val x = MyClass("hello", "world") into a mapping of some kind, e.g. getCCParams(x) returns "param1" -> "hello", "param2" -> "world" Which works for any case class, not just predefined ones. I've found you can pull the case class name out by writing a method that interrogates the underlying Product class, e.g. def getCCName(caseobj: Product) = caseobj.productPrefix getCCName(x) returns "MyClass" So I'm looking for a similar solution but for the case class fields. I'd imagine a

Scala case classes have a limit of 22 fields in the constructor. I want to exceed this limit, is there a way to do it with inheritance or composition that works with case classes? VonC More recently (Oct 2016, six years after the OP), the blog post " Scala and 22 " from Richard Dallaway explores that limit: Back in 2014, when Scala 2.11 was released, an important limitation was removed: Case classes with > 22 parameters are now allowed. That said, there still exists a limit on the number of case class fields, please see https://stackoverflow.com/a/55498135/1586965 This may lead you to think

So here's the situation. I want to define a case class like so: case class A(val s: String) and I want to define an object to ensure that when I create instances of the class, the value for 's' is always uppercase, like so: object A { def apply(s: String) = new A(s.toUpperCase) } However, this doesn't work since Scala is complaining that the apply(s: String) method is defined twice. I understand that the case class syntax will automatically define it for me, but isn't there another way I can achieve this? I'd like to stick with the case class since I want to use it for pattern matching. The