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From: Niklas Holsti <niklas.holsti@tidorum.invalid>
Newsgroups: comp.lang.ada
Subject: Re: Numerical calculations: Why not use fixed point types for
 everything?
Date: Mon, 04 Feb 2013 11:37:49 +0200
Organization: Tidorum Ltd
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Date: 2013-02-04T11:37:49+02:00
List-Id: <comp.lang.ada>

On 13-02-04 09:27 , Ada novice wrote:
> On Monday, February 4, 2013 7:43:14 AM UTC+1, Niklas Holsti wrote:
>>
>>    Number2 := Long_Float (Index) * Number;
> 
> 
> Beginner's mistake! Thanks.

Perhaps Ada could have helped to avoid this mistake? You could have
thought about how you intended to use the Number variable, when you
declared it. If you did not intend to change it, you could have declared
it constant:

   Number : constant Long_Float := 100.0;

and then the compiler would have complained about the assignment
statement which changes Number.

In experimental programs like this, one often forgets to think about
constant vs variable, or about proper names for variables. But on the
average, I think it saves time, even when one is experimenting.

-- 
Niklas Holsti
Tidorum Ltd
niklas holsti tidorum fi
      .      @       .