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From: Christoph Grein <christoph.grein@eurocopter.com>
Newsgroups: comp.lang.ada
Subject: Re: memory leakages with Ada?
Date: Wed, 20 Mar 2002 07:25:16 +0100 (MET)
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Date: 2002-03-20T07:25:16+01:00

> Yes, that's exactly what I was trying to say!
> My point was that in the various C techniques,
> the bytes of the result get constructed once,
> and then don't have to be copied as part of
> the function return, whereas returning a String
> in Ada will involve copying the bytes.

declare
  Result_1: String := function_Call;
  Result_2: String renames function_Call;

Result_1 is a copy of the bytes, Result_2 is not.

Note the second is an Ada95 feature. In Ada83, function calls were not objects 
(and thus could not be renamed).