Re: using put procedure with a generic package

["Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>]

On Wed, 7 May 2008 21:48:47 -0700 (PDT), ophir.geffen@gmail.com wrote:

> The problem is that the package needs to know how to handle most non-
> limited types like Integer, String, Client, Plane, Book, Document, ...

String is an indefinite type.

> Is there a better way to write the package and/or a more correct way
> to declare it when using it?

That depends on what your queue package is. If it is a queue of items with

1. no requirements of the representation of in the queue

2. value copy semantics of insertion and retrieval

then I would use one of the following three variants:

1. Queue internally implemented by an array of elements

2. Queue implemented as a user-defined storage pool

3. Queue implemented as a user-defined stream

For any of these variants you just don't need any Put procedure. Copying is
predefined private type (cases 1 and 2). Stream attributes are also
predefined. The choice between 1 and 2 depends on whether Item is definite:

   type Item is private;  -- 1 would be OK
   type Item (<>) is private;  -- This is for the variant 2

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