From: Ken Allen <kallen19918@...>
Date: 2006-11-21T02:54:33+09:00
Subject: Re: How to put array into variables

This also works:
b = "word1 word2"
((a,b)) = b.scan(/^(\w+)\s(\w+)$/)
p a => "word1"
p b => "word2"

The outer parens matches the outer array, and the inner parens matches 
the inner array, allowing a and b to decompose it.
It's a pretty useful trick when decomposing nested arrays.

Ken

Vincent Fourmond wrote:
> Luca Scaljery wrote:
>   
>> Hi All
>>
>> I tried to put an array into variables like this
>>
>>     
>
> b = "aaa bbb"
>   
>> s, h = b.scan(/^(\w+)\s(\w+)$/)
>>
>> But for some reason 's' becomes an array and 'h' is undefined!!
>>     
>
>   The problem is that scan returns an array of arrays:
> [ # first match:
>   [ #first group :
>     "aaa",
>     # second group:
>     "bbb"
>   ]
> ]
>
>   So you might want in your case:
>
> s, h = b.scan(/^(\w+)\s(\w+)$/)[0]
> s, h = b.scan(/^(\w+)\s(\w+)$/).flatten
>
> 	Vince
>