my funny old code

[juan_gandhi]

package scalakittens

/**
  * A trait that describes a goodness of data or outcome or something
  *
  * Created by vpatryshev on 10/18/15.
  */
trait Goodness:
  def isGood: Boolean
  def isBad:  Boolean = !isGood

trait PositiveAttitude extends Goodness { def isGood = true }
trait NegativeAttitude extends Goodness { def isGood = false}

Comments

[sassa_nf]

:)

def isGood: Boolean = !isBad
def isBad: Boolean = !isGood

[lomeo]

+1
The only thing that should be mentioned is that, in that case, we gain some convenience by giving up some compiler guarantees. If we'd be able to force one of these methods to be implemented, it'd be way better.