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From: Tucker Taft <stt@averstar.com>
Subject: Re: access-to-constant dispatching params
Date: 2000/05/08
Message-ID: <391722DD.1F26622B@averstar.com>#1/1
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m_cubed@my-deja.com wrote:
> 
> Ada provides access-to-variable dispatching
> parameters.
> 
> For example:
> 
> procedure Set_Exercise_Mode (
>   State_Ptr: access State_Type;
>   Exercise_Mode: in Exercise_Mode_Type);
> 
> What it doesn't seem to provide is
> access-to-constant dispatching parameters.

This is one thing being considered for Ada 0X.

However, as someone else suggested, plain old "IN" parameters
pretty much do the job and are preferable in certain ways.

> ...
> Are access-to-constant dispatching parameters
> being considered for a future version of Ada?

Yes.
-- 
-Tucker Taft   stt@averstar.com   http://www.averstar.com/~stt/
Technical Director, Commercial Division, AverStar (formerly Intermetrics)
(http://www.averstar.com/services/IT_consulting.html)  Burlington, MA  USA