Explicit Type Conversion in Scala
Lets say I have the following code:
abstract class Animal
case class Dog(name:String) extends Animal
var foo:Animal = Dog("rover")
var bar:Dog = foo //ERROR!
How do I fix the last line of this code? Basically, I just want to do what, in a C-like language would be done:
var bar:Dog = (Dog) foo
Solution 1:
I figured this out myself. There are two solutions:
1) Do the explicit cast:
var bar:Dog = foo.asInstanceOf[Dog]
2) Use pattern matching to cast it for you, this also catches errors:
var bar:Dog = foo match {
case x:Dog => x
case _ => {
// Error handling code here
}
}