Discriminants or Constructor Function for Limited Types

[R R <rrr.eee.27@gmail.com>]

There are two ways (to my knowledge) how to initialize objects of limited types. Either the limited type has some discriminants

   type DLT (Width, Length : Positive) is tagged limited private;
   Obj : DLT (3, 5);

or I can provide a constructor function that takes corresponding parameters

   type LT (<>) is tagged limited private;
   function Make (Width, Length : Positive) return LT;
   Obj : LT := Make (3, 5);

Do you recommend one way over the other? Why? Is it possible to combine both methods (discriminants plus constructor)? 

RREE