Re: unconstrainded array question

[dewarr@my-dejanews.com]

In article <36033452.12702502@SantaClara01.news.InterNex.Net>,
  tmoran@bix.com (Tom Moran) wrote:
> Since you gave no definition for whatever Object might be, it's a
> little hard to tell what "This.xyz" might possibly be.  If xyz is an
> array, then it clearly must have bounds and it's range is defined.  If
> xyz is a type, and one with indefinite bounds,
> then obviously you
> can't use those undefined bounds as if they had values.


As I often remind people, technical information that you
read on a newsgroup like this can be wrong or misleading.
This is an example.

There are no array objects in Ada with "indefinite" or
"undefined" bounds. All array objects are constrained and
have well defined bounds, so yes, of course, if the type
of Object is an array, you can use the 'Range attribute
in this case (it is indeed the primary and most familiar
use of the range attribute!)

The *type* of an array object may be unconstrained, but of
course, as in the original questioner's example, you apply
the Range attribute to the object, not the type!

Robert Dewar

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