From: "Carlo E. Prelz" <fluido@...>
Date: 2013-01-25T15:10:04+09:00
Subject: Re: General Ruby syntax questions

	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. 

Carlo

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