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From: Ludovic Brenta <ludovic@ludovic-brenta.org>
Newsgroups: comp.lang.ada
Subject: Re: Access keyword
Date: Tue, 29 Apr 2008 07:43:18 -0700 (PDT)
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Date: 2008-04-29T07:43:18-07:00
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S=E9bastien wrote:
> I'd like to know if there is performance issue using the access keyword?
[snipped]
> Is NormeAccess faster because I'm using access keyword?

Have you measured a speed difference, or compared the assembly code
emitted by the compiler?

> I read that Ada
> compiler choose if a reference or a value mode is used in the Norme
> function, so it would mean that the access keyword should be used only
> for runtime allocated variable.

This is correct so, in your example, NormeAccess is unnecessary.
However there are legitimate uses of acces types beyond dymanic memory
allocation. For example a stack-allocated record may contain an access
to another stack-allocated record or array. Another use for access
types is access discriminants, but this is an advanced topic.

--
Ludovic Brenta.