Re: [Q] Problem with Array Concatenation?

[kst@sd.aonix.com (Keith Thompson)]

In <ED611s.5yM.0.-s@inmet.camb.inmet.com> stt@houdini.camb.inmet.com (Tucker Taft) writes:
> Matthew Heaney (mheaney@ni.net) wrote:
> : ...
> : There's another way to make the fix, by manually sliding the initial substring:
> 
> : declare
> :    type AT is array (Positive range 1 .. 100) of Integer;
> 
> :    SA : AT;
> :    DA : AT;
> :    subtype Slided is AT (1 .. 50);
> 
> Now *this* is not legal Ada (83 or 95).  You can't re-constrain
> a constrained array (sub)type.

If Ada 95 hadn't restricted the 'Base attribute to apply only to
scalar subtypes, you could declare:

    subtype Slided is AT'Base (1 .. 50);
    -- or Slid, if you prefer

(Some, but not all, Ada 95 compilers do support this.)

Of course, there's also the minor problem that AT is a reserved word.

-- 
Keith Thompson (The_Other_Keith) kst@sd.aonix.com <http://www.aonix.com> <*>
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