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MathGroup Archive 2005

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Re: Zero-based indexing option?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg61644] Re: [mg61621] Zero-based indexing option?
  • From: Chris Chiasson <chris.chiasson at gmail.com>
  • Date: Mon, 24 Oct 2005 21:07:01 -0400 (EDT)
  • References: <200510240544.BAA29061@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

You could try AddTo or PreIncrement. You could also try learning
functional programming, which will probably be quite painful coming
from a procedural programming background.

On 10/24/05, Matt <anonmous69 at netscape.net> wrote:
> Hello,
>   I am a C/C++ developer by trade and zero-based indexing is the norm.
> When dealing with a set of objects, if I want to iterate over all of
> them for some reason or another, I'm used to doing something like this:
>
> unsigned int ii(0);
> while (ii < elementCount)
> {
>   // do something
>   ++ii;
> }
>
> where elementCount represents the number of elements in a set of
> objects.  In Mathematica, I'm getting into the habit of doing something
> like this:
>
> iterations = Length[(* of something *)] ;
> iterations++;
> ii = 1;
> While[ii <  iterations, (* do something *); ii++]
>
> As you can see, I need to initialize my iterator to 1 and in order to
> keep strictly 'less than' semantics, I need to increase the size of my
> object set by one.  This is not a big deal, and if I have no other
> choice, I'll probably settle for setting the iterator to one and using
> 'less than or equal' semantics for the loop constraint so I'm not
> altering the size of the object set.
>
> However, it would be great if there were a Mathematica option or code
> driven setting that would allow me to use zero-based indexing.  Is
> there such a thing?
>
> Thanks,
>
> Matt
>
>


--
http://chrischiasson.com/contact/chris_chiasson


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