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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Lower bounds of Strings
Date: Fri, 15 Jan 2021 14:34:36 +0100
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On 2021-01-15 12:48, Jeffrey R. Carter wrote:

> A string, being a sequence, should usually have a lower bound of 1, but 
> a decent language needs to also allow string values with other lower 
> bounds. Maybe something like
> 
> type String_Base is array (Positive range <>) of Character;
> subtype String is String_Base (Positive range 1 .. <>);
> 
> Slices would be String_Base, not String, and Index would take String_Base.

    S     : String_Base (1..1024);
    First : Integer := 1;
    Last  : Integer;
begin
    loop
       Get_Line (S (First..S'Last), Last);
       First := Last + 1;
       exit when ...;
    end loop;

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de