Scala equivalent of JavaScript ~.apply and Python unpacking http://blog.fgribreau.com/2013/12/scala-equivalent-of-javascript-apply.html

unpacking.scala

def print[A](params:A*) = params.foreach(println)

// Below, every call to our print function are equivalent

// apply an array of arguments
val params = Seq(1,2,3)
print(params: _*) 

// apply an array of arguments
print(Seq(1,2,3): _*)
print(1,2,3)