Scala compiler not recognizing a view bound

Question

I\'ve tried this line of code

def **[A <% Numeric[A]](l:List[A],m:List[A])=l.zip(m).map({t=>t._1*t._2})

However on compilation, I get

Answer 1

You can also solve this with a context bound. Using the context method from this answer, you can write:

def **[A : Numeric](l:List[A],m:List[A]) =
   l zip m map { t => context[A]().times(t._1, t._2) }

or

def **[A : Numeric](l:List[A],m:List[A]) = {
   val num = context[A]()
   import num._
   l zip m map { t => t._1 * t._2 }
}