From mboxrd@z Thu Jan  1 00:00:00 1970
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From: fraser@nospam.com
Subject: Re: should I be interested in ada?
Date: 1999/02/18
Message-ID: <7ai8ji$q8q$1@remarQ.com>#1/1
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References: <7a72e6$g55$1@probity.mcc.ac.uk> <7afttr$7v3$1@nnrp1.dejanews.com>
 <7aganu$qsc$1@plug.news.pipex.net> <36CC11A1.C7A71642@hercii.mar.lmco.com>
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Organization: Vegetarian Ada Programmers
Newsgroups: comp.lang.ada
Originator: fraser@titanic
Date: 1999-02-18T00:00:00+00:00
List-Id: <comp.lang.ada>

I nearly cried when gpetrey@hercii.mar.lmco.com said:

>>    X: array (1..10) of Float;
>>    ...
>>    for i in X'Range loop X(i) := 1.0; end loop;

>I think using an aggregate would be much better than a loop:

>X := (1 .. 10 => 1.0);

In this situation, I usually use

   X := (others => 1.0);

to avoid a dependency on the array bounds.  In fact, one of my favourite
things about Ada is the various ways in which you can specify a range.
I generally pick the lowest one on the following list that's available
in the context:

   for I in 1 .. 10 loop
   for I in Low .. High loop
   for I in Discrete_Type loop
   for I in Array_Type'Range loop
   for I in Array_Object'Range loop

(I think I read this in the Quality and Style Guide).

Btw: I love the Fortran 90 'where' feature ... anything that avoids
looping over an array performing an identical operation on each element
has to be a Good Thing.

Fraser.
--
Fraser Wilson   |  700 East Middlefield Rd  |  Phone:  650 943 5270
Sr R&D Engineer |  Mountain View, CA 94043  |  Fax:    650 934 1227
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           Ada, Linux, PowerPC: The Golden Triangle