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From: Jeffrey Carter <spam.jrcarter.not@spam.not.acm.org>
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Subject: Re: Ann: Natools.Chunked_Strings, beta 1
Date: Wed, 30 Nov 2011 12:39:36 -0700
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Date: 2011-11-30T12:39:36-07:00
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On 11/30/2011 06:08 AM, Natasha Kerensikova wrote:
>
> [An implementation optimized for appending should have better performance for
> that use and GNAT's Unbounded_String uses a contiguous array] Combined with
> the fact I use GNAT is enough (for me) to justify writing
> Natools.Chunked_Strings.

Justifications for rewriting Unbounded_Strings are

1. For fun
2. As a learning experience
3. You have timing requirements you can't otherwise meet.

3. does not appear to be the case here; you're planning to write something, but
you have yet to demonstrate that Unbounded_Strings isn't suitable for its timing 
requirements. So you're doing it for 1. or 2. Doing it for 3. when you haven't 
demonstrated 3. is premature optimization, AKA the root of all evil.

Doing it for 1. or 2. is fine, but means that comments about efficiency or 
performance are irrelevant.

FWIW, we have a large, soft-real-time system that makes extensive use of 
Unbounded_Strings, and have no problem meeting our timing requirements.

-- 
Jeff Carter
"My dear Mrs. Hemoglobin, when I first saw you, I
was so enamored with your beauty I ran to the basket,
jumped in, went down to the city, and bought myself a
wedding outfit."
Never Give a Sucker an Even Break
111