From: Ken Bloom <kbloom@...>
Date: 2007-12-14T00:25:03+09:00
Subject: Re: While statements in ruby

On Tue, 11 Dec 2007 23:00:52 +0100, Robert Klemme wrote:

> On 11.12.2007 18:25, Mark Mr wrote:
>> Hi guys, I have a probably simple question. I dont know how to do
>> iteration loops in ruby that reference more than one item of an array
>> or more than one array. Here's an example of what I would do in php.
>> Can anyone convert this to ruby? Thanks :)
>> 
>> while ($i=0; $i < $response_table.length; $i += 2) {
>> 
>> <td> $response_table[$i] </td>
>> <td> $response_table[$i + 1] </td>
>> 
>> }
> 
> I am amazed nobody mentioned each_slice: with "enumerator" you can do:
> 
> irb(main):006:0> (1..6).each_slice(2) {|a,b| print a,",",b,"\n"} 1,2
> 3,4
> 5,6
> => nil

Because someone did mention #each_cons
In reality, you're right and they (and most other people, myself 
included) didn't read closely enough to see that the loop does
i+=2, not i+=1.

--Ken

-- 
Ken (Chanoch) Bloom. PhD candidate. Linguistic Cognition Laboratory.
Department of Computer Science. Illinois Institute of Technology.
http://www.iit.edu/~kbloom1/