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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: A few questions
Date: Thu, 05 Nov 2015 08:45:13 +0000
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Date: 2015-11-05T08:45:13+00:00
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"Randy Brukardt" <randy@rrsoftware.com> writes:

> Prime_Number_Set is (directly) an iterator, so you use "in" to iterate
> over it:
>
>  for P in F552A00_Prime_Numbers.Prime_Number_Set'(Max_Value => 31) loop
>
> The "of" form is for iterating over an array or a container whose type
> has the Default_Iterator aspect (which gives the iterator to use).
>
> I can hear the head slap from here. ;-)

Yes, but;

     1. with Ada.Text_IO;
     2. with F552A00_Prime_Numbers;
     3. procedure Primes is
     4. begin
     5.    for P in F552A00_Prime_Numbers.Prime_Number_Set'(Max_Value => 31) loop
                                                          |
        >>> expected a discrete type
        >>> found type "Prime_Number_Set" defined at f552a00_prime_numbers.ads:74

     6.       Ada.Text_IO.Put_Line (P'Img);
     7.    end loop;
     8. end Primes;

Perhaps this is the GNAT problem you spoke of? (FSF GCC 5.1.0, GNAT GPL 2015)