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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Community Input for the Maintenance and Revision of the Ada
 Programming Language
Date: Tue, 3 Oct 2017 15:20:21 -0500
Organization: JSA Research & Innovation
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Xref: news.eternal-september.org comp.lang.ada:48325
Date: 2017-10-03T15:20:21-05:00
List-Id: <comp.lang.ada>

"G.B." <bauhaus@notmyhomepage.invalid> wrote in message 
news:oqvlie$lh9$1@dont-email.me...
> On 03.10.17 09:48, Simon Wright wrote:
> Is it really possible to create less overhead? E.g., by using
> allocators, storage pools, and adding string operations as
> necessary?

Yes, because I'd solve Simon's problem with a record (and have done so 
repeatedly):

    type Simon_Strings is
         Data : String (1..14);
         Len : Natural;
    end record;

And that has less overhead than the discriminated string type. (Not a lot 
less, but definitely less.)

> (But, still, predefined string types from the Ada library
> depend on types Positive and Natural with their implementation
> defined ranges. I understand that the 'Size of these types
> is 16 in Janus/Ada?)

Yup. One can define a string type in Janus/Ada using Long_Integer, and I've 
occassionally done that. I have had programs run into the 32767 character 
limit in the Unbounded string case; another reason that depending on 
predefined types is evil.

                             Randy.