Show3

Trait for Show for a product of 3 logical elements. This trait is implemented directly by the type in question, unlike the corresponding ShowEq3T trait which externally acts on an object of the specified type to create its String representations. For your own types it is better to inherit from Show3 and then use Show3ElemT or Persist3ElemT to create the type class instance for ShowT. The Show3ElemT or Persist3Elem class will delegate to Show3 for some of its methods. It is better to use Show3 to override toString method than delegating the toString override to a ShowEq3T instance.