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From: Matthew Heaney <matthew_heaney@acm.org>
Subject: Re: Random access.
Date: 1998/08/30
Message-ID: <m3soifqhjz.fsf@mheaney.ni.net>#1/1
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Sender: matt@mheaney.ni.net
References: <6s9hf7$cg$1@platane.wanadoo.fr>
NNTP-Posting-Date: Sun, 30 Aug 1998 03:17:49 PDT
Newsgroups: comp.lang.ada
Date: 1998-08-30T00:00:00+00:00
List-Id: <comp.lang.ada>

"BARDIN Marc" <Marc.Bardin@wanadoo.fr> writes:

> - I need to use direct access file.
> - It's ok to instantiate with static descriptor (i.e : package Dir_Es is new
> Direct_Io (1);). But my need is a dynamic access, i should want to change
> the access size dynamically to read/write exactly number of bytes i want at
> location i wish.

Package Ada.Direct_IO is for homogenous collections.  You appear to need
heterogeneous collections, in which case you should look at
Ada.Streams.Stream_IO to see if it meets your needs.