From: Siep Korteling <s.korteling@...>
Date: 2008-07-15T05:16:05+09:00
Subject: Re: how to loop through two arrays in parallel

Glen Holcomb wrote:
> On Mon, Jul 14, 2008 at 2:03 PM, Mitchell Gould <go_mitchell@yahoo.ca>
> wrote:
> 
>> Is there a way in Ruby to do this?
>>
>>
>> for product in products[] and quantity in quantity[]?
>> --
>> Posted via http://www.ruby-forum.com/.
>>
>>
> product_quantity = {}
> 
> products.each_with_index do |product, index|
> product_quantity[product.to_sym] = quantity[index]
> end
> 

orderlist = products.zip(quantity)

results in an array of arrays in stead of a hash. A hash is faster for 
lookup but looses the order (in Ruby 1.8.6), an array preserves the 
order.

Hth,

Siep
-- 
Posted via http://www.ruby-forum.com/.