Re: Can Ada iterate over Nd array?

["Randy Brukardt" <randy@rrsoftware.com>]

"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:18y0zty0yw1m3.1dkfnp5etqdk0$.dlg@40tude.net...
> On Thu, 26 Apr 2012 06:02:13 +0000 (UTC), Okasu wrote:
>
>> So you trying to say that i have to write loops for 10/100/1000d arrays
>> by hand?
>
> You should introduce an index type of your own (a Nth tuple) and use a 
> flat
> container, e.g. a map over that index.
>
> Unfortunately Ada does not have 1st class indices, which was #10 in my 
> wish
> list for Ada 202X.

It does, however, have 2nd class indices (see 4.1.6), which work better than 
first class indicies most of the time.

Also, you can iterate over the entire array without using any indicies in 
Ada 2012:

   for E of A loop
      null;
   end loop;

This also works for containers.

But this doesn't work in earlier versions of Ada.

                                        Randy.