Created
August 1, 2012 17:36
-
-
Save soc/3229104 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package zoo | |
class Animal | |
class Lion extends Animal | |
class Cage[+T <: Animal] { | |
def add(animal: T) { println("Adding animal...") } // ERROR | |
} | |
/* | |
covariant type T occurs in contravariant position in type T of value animal | |
*/ |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment