"Marin David Condic" a �crit dans le message de news:3F797748.3000203@noplace.com... > I'm not even sure why Bounded_String exists - except for intellectual > completeness. They are great if you want an abstract data type *implemented as* as string of variable length. For example, if you have Person_Name, Person_Address, etc. You want them to be different types, they have a maximum length, and a variable current length. Instead of deriving from String, you get these types by an instantiation of Bounded_String. -- --------------------------------------------------------- J-P. Rosen (rosen@adalog.fr) Visit Adalog's web site at http://www.adalog.fr