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From: Gautier write-only <gautier_niouzes@hotmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Performance of the Streams 'Read and 'Write
Date: Fri, 30 Oct 2009 01:58:15 -0700 (PDT)
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On 30 Okt., 01:39, "Jeffrey R. Carter"
<spam.jrcarter....@spam.acm.org> wrote:

> And if you overlay the Stream_Element_Array onto the Buffer, thus eliminating
> the copying and the stream attribute operations?

With an Unchecked_conversion ?... Sure, but you cannot guarantee that
the Buffer will be packed the same way as Stream_Element_Array on a
compiler X that you don't know. On that type of project (open-source
compression, no compiler/system dependency) I want to avoid any "dirty
trick" like that.
Anyway, the copying takes almost no time. Note that I do not copy
_and_ use the stream attribute at the same time:
Variant 1 uses the stream attribute on Buffer.
Variant 2 copies into a Stream_Element_Array ans uses the Write
procedure in Ada.Streams.

Gautier