impliicitClass.scala

 implicit class ToParrot( p : Parrot){
    def speakLikeHuman(implicit humanlike : HumanTendency[Parrot]) : String = {
      humanlike.makeHumanLike(p)
    }
  }

//let us create our closed model object type Parrot 
val parrot = Parrot("Casey", "prrrrr")

//closed object type Cat
val cat = Cat("Puss", "meow")

//now with the first method, the type class will work like this
//we call the method passing the parrot as a parameter like
// speakLikeHum
def speakLikeHuman(p :Parrot)(implicit humanTendency: HumanTendency[Parrot]) : String = { //#1
    humanTendency.makeHumanLike(p)
  }

//but with the second method,we can easily do this 
parrot.speakLikeHuman //#2

println ( speakLikeHuman(parrot) ) // prints out ---------> I am Casey, the sound i make is prrrrr,and i can talk like a human :)
println( parrot.speakLikeHuman  ) // prints out ---------> I am Casey, the sound i make is prrrrr,and i can talk like a human :)

//Now if we try this 

println( cat.speakLikeHuman ) //error : value speakLikeHuman is not a member of Cat