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Newsgroups: comp.lang.ada
Subject: Re: Selecting Components
From: Georg Bauhaus <bauhaus@futureapps.de>
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Date: Mon, 09 Jan 2006 01:12:18 +0100
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Date: 2006-01-09T01:07:31+01:00
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On Sat, 2006-01-07 at 20:24 +0000, Jeffrey R. Carter wrote:


> What would be the consequences if a language were designed so that all 
> selections used dot notation, including arrays:
> 
> Array.Index
> Array.Index_1, Index_2
> Array.Low .. High

Interesting.
Is "Index_1, Index_2" and expression, or an identifier
as in Pack.Op, Rec.Comp, etc.?

with Index;
...
declare
  Index: ...
begin
  for k in a'range loop
    Result := Result + a.Index.k;
  end loop;
end;

For the record, in Eiffel you'd write array @ expr,
Haskell uses array !! expr.
Eiffel uses '.' for object.feature, not as an operator.
Haskell uses '.' for function composition, too, if surrounded
by white space.