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From: dweller@dfw.net (David Weller)
Subject: Unconstrained array aggregation..sq. peg into round hole?
Date: 1996/03/17
Message-ID: <4ihrvo$hs5@dfw.dfw.net>#1/1
X-Deja-AN: 143809988
organization: DFWNet -- Public Internet Access
newsgroups: comp.lang.ada
Date: 1996-03-17T00:00:00+00:00
List-Id: <comp.lang.ada>

Disclaimer: I didn't write this code, but I'm sure puzzled about what
to do to get the "desired" results.  This is easy to do in C, so I'm
sure there's a "simple" way to do it in Ada 95.  Anyway, the problem
is wanting to take a "slice" of a 2-dim unconstrained array and use it
to generate a constant 1-dim array.  The GNAT error message is
"strange.ads:20:50: incorrect number of indices in indexed component",
but I don't see this as a GNAT bug at all.  

I must confess I don't use such strange constnat initializations
typically, so I'm a little rusty on figuring out a solution.

Suggestions are welcome...

package Strange is

   type Real_Array is array (Natural range <>) of Float;

   type Real_Table is array (Natural range <>, Natural range <>) of Float;

   MAX : constant := 3;

   Table          : constant Real_Table :=
  ( (20.0,  40.0,  80.0),
    (20.0,  40.0,  80.0),
    (20.0,  40.0,  80.0),
    (20.0,  40.0,  80.0),
    (60.0, 120.0, 240.0) );

  An_Array : constant Real_Array;

private

  An_Array : constant Real_Array := (0..Max-1 => Table(Max)(0..Max-1));
						-- incorrect # of indices?

end Strange;
-- 
		    GNAT = GNAT is Not an Ada Translator
==Ada 95 Booch Components: www.ocsystems.com/booch or www.dfw.net/~dweller==
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