From: Matthew Kerwin <matthew@...>
Date: 2013-01-25T15:14:51+09:00
Subject: Re: General Ruby syntax questions

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On 25 January 2013 16:10, Carlo E. Prelz <fluido@fluido.as> wrote:

>         Subject: Re: General Ruby syntax questions
>         Date: Fri 25 Jan 13 02:15:09PM +0900
>
> Quoting Matthew Kerwin (matthew@kerwin.net.au):
>
> > By convention, in most programming contexts, 'i' is often to count
> > iterations of a loop.
> >
> >     for (i = 0; i < number_of_iterations; i++)
> >
> > ... is pretty ubiquitous.  In a nested loop, usually the inner loop uses
> > 'j', and then 'k', etc.
>
> Comes from Fortran, where, unless otherwise specified, variables whose
> names begun with the letters I to M were implicitly typed as
> integers. Thus, loop indices were most commonly I, J, K, L and M.
>

I did not know that. Cool, thanks Carlo.

-- 
  Matthew Kerwin, B.Sc (CompSci) (Hons)
  http://matthew.kerwin.net.au/
  ABN: 59-013-727-651

  "You'll never find a programming language that frees
  you from the burden of clarifying your ideas." - xkcd

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<div dir=3D"ltr">On 25 January 2013 16:10, Carlo E. Prelz <span dir=3D"ltr"=
>&lt;<a href=3D"mailto:fluido@fluido.as" target=3D"_blank">fluido@fluido.as=
</a>&gt;</span> wrote:<br><div class=3D"gmail_extra"><div class=3D"gmail_qu=
ote"><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le=
ft:1px #ccc solid;padding-left:1ex">
=A0 =A0 =A0 =A0 Subject: Re: General Ruby syntax questions<br>
=A0 =A0 =A0 =A0 Date: Fri 25 Jan 13 02:15:09PM +0900<br>
<div class=3D"im"><br>
Quoting Matthew Kerwin (<a href=3D"mailto:matthew@kerwin.net.au">matthew@ke=
rwin.net.au</a>):<br>
<br>
&gt; By convention, in most programming contexts, &#39;i&#39; is often to c=
ount<br>
&gt; iterations of a loop.<br>
&gt;<br>
&gt; =A0 =A0 for (i =3D 0; i &lt; number_of_iterations; i++)<br>
&gt;<br>
&gt; ... is pretty ubiquitous. =A0In a nested loop, usually the inner loop =
uses<br>
&gt; &#39;j&#39;, and then &#39;k&#39;, etc.<br>
<br>
</div>Comes from Fortran, where, unless otherwise specified, variables whos=
e<br>
names begun with the letters I to M were implicitly typed as<br>
integers. Thus, loop indices were most commonly I, J, K, L and M.<br></bloc=
kquote><div><br></div><div style>I did not know that. Cool, thanks Carlo.</=
div><div>=A0</div></div>-- <br>=A0 Matthew Kerwin, B.Sc (CompSci) (Hons)<br=
>
=A0 <a href=3D"http://matthew.kerwin.net.au/" target=3D"_blank">http://matt=
hew.kerwin.net.au/</a><br>=A0 ABN: 59-013-727-651<br><br>=A0 &quot;You&#39;=
ll never find a programming language that frees<br>=A0 you from the burden =
of clarifying your ideas.&quot; - xkcd
</div></div>

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