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From: ada_student@yahoo.com
Newsgroups: comp.lang.ada
Subject: types and subtypes
Date: 13 Mar 2006 04:07:57 -0800
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Date: 2006-03-13T04:07:57-08:00
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Given,

              subtype Positive is Integer range 1 .. Integer'Last;
              type String is (Positive range <>) of Character;

          the following should be illegal,

              subtype Count_To_Ten is Integer range 1 .. 10;
              subtype Ten_Characters is String (Count_to_Ten);

          and the following should be legal, instead

              subtype Count_To_Ten is Positive range 1 .. 10;
              subtype Ten_Characters is String (Count_to_Ten);

Why is Count_To_Ten allowed to be an Integer even though
the indices of String are declared as Positives?