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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: generic parameter Copy for primitifs types.
Newsgroups: comp.lang.ada
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Date: Thu, 23 Jun 2005 19:54:39 +0200
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Date: 2005-06-23T19:54:26+02:00
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On 23 Jun 2005 09:41:51 -0700, nblanpain@hotmail.com wrote:

> this is my problem :
> 
> -----
> generic
> type T_Item is private;
> with procedure Copy (Left : in out T_Item; Right : in T_Item);
> package Toto is
> ...
> end Toto;
> ------
> 
> At instanciation, for T_Item = Integer for example, is there a methode
> to take for Copy => ":=". Must I redefined Copy ? Can I say that, by
> default, take ":=" ?

No, for good or bad, but ":=" is not a procedure in Ada.

One point, the formal generic parameter T_Item is declared as "private".
This means that its actual counterpart must have assignment. So you can
write:

generic
  type T_Item is private;
package Toto is
   ...
end Toto;

and use assignment within the body of Toto:

package body Toto is
   ...
      X, Y : T_Item;
   begin
   ...
      X := Y;
   ...
end Toto;

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de