Daily scala

One welcome change in Scala is the change of semantics of the == operator. In Scala it is the same as doing a .equals comparison in Java. If you want identity comparison you can use the eq method (and ne for the not equal comparator).

Examples:

1. scala> case class Name(first:String, last:String)
2. defined class Name
3. scala> val jesse = Name("Jesse","Eichar")
4. jesse: Name = Name(Jesse,Eichar)
5. scala> val jesse2 = Name("Jesse","Eichar")
6. jesse2: Name = Name(Jesse,Eichar)
7. scala> val jody = Name("Jody","Garnett")
8. jody: Name = Name(Jody,Garnett)
9. scala> val jJames = Name("Jesse","James")
10. jJames: Name = Name(Jesse,James)
11. scala> jesse == jesse2
12. res0: Boolean = true
13. scala> jesse == jody
14. res1: Boolean = false
15. scala> jesse ne jesse2
16. res2: Boolean = true
17. scala> jesse eq jesse2
18. res3: Boolean = false