From: "Michael C. Libby" <m_libby@...>
Date: 2002-12-02T10:13:54+09:00
Subject: Re: For statements

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On Sunday 01 December 2002 18:28, Daniel Carrera wrote:
> for (i = 0; i < num; i += 3) ...
>
> Does the for statement have any form other than 'for i in array ...'?
>
> Can I use a for statement to do the equivalent this?:
> 3.step(9,2) {|i| puts i }

Question is, why do you want to? You've found a clear way to accomplish it 
using step. Perhaps you want to modify the loop boundary while the loop is 
executing...

So, if you really want to emulate the C-style for loop, simply use a while 
loop. The C-style for loop is really just a while loop in disguise.

i = 3
num = 9
while i <= num do
  puts i
  i += 2
end

 -michael

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