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From: Okasu <oka.sux@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Can Ada iterate over Nd array?
Date: Thu, 26 Apr 2012 20:54:16 +0000 (UTC)
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Date: 2012-04-26T20:54:16+00:00
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On 2012-04-26, Adam Beneschan <adam@irvine.com> wrote:
> On Wednesday, April 25, 2012 11:02:13 PM UTC-7, Okasu wrote:
>> On 2012-04-26, Jeffrey Carter wrote:
>> >
>> > type Three_D is array (1 .. 3, 7 .. 300, 'A' .. 'Z') of Integer;
>> >
>> > A : Three_D;
>> >
>> > for I in A'range (1) loop
>> >     for J in A'range (2) loop
>> >        for K in A'range (3) loop
>> >           -- Do something with A (I, J, K)
>> >        end loop;
>> >     end loop;
>> > end loop;
>> >
>>
>> It's a brain dead code.
>> So you trying to say that i have to write loops for 10/100/1000d arrays
>> by hand?
>
> I don't think I've *ever* seen an array with more than three dimensions ever used, in 35 years of programming.  (Exception: I think I once created a 4-dimensional array in APL in an attempt to write a one-line function to do something complicated.  But that's more of a game, not really programming.)  If you really need a way to associate arbitrarily long tuples with elements, you probably should be using some other kind of structure than an array.
>
> But I think Ada 2012 does support what you're looking for; see the example at the bottom of 5.5.2 (http://www.ada-auth.org/standards/12rm/html/RM-5-5-2.html).
>
>                     -- Adam

Thanks, it's exactly what i'm looking for, i'm happy to know that i can
easily iterate over any kind of array in Ada.