Allocationless implicits for different instantiations

gistfile1.txt

class C[T]

object ImplicitString {
  def foo(): Unit = Console.println("of String")
}

object ImplicitInt {
  def foo(): Unit = Console.println("of Int")
}

implicit def cstrImpl(c: C[String]) = ImplicitString
implicit def cintImpl(c: C[Int]) = ImplicitInt

val cstr = new C[String]
val cint = new C[Int]

cstr.foo()
cint.foo()