From: Marnen Laibow-Koser <marnen@...>
Date: 2010-02-02T02:52:38+09:00
Subject: Re: Adding keys to a hash in a loop

Jack Bauer wrote:
> Robert Klemme wrote:
> 
>> Erm, how would you put a key value pair into a Hash without a loop?
> 
> This is the loop...
> 
> output.each do |item|
>   output_hash << {item.name => []}
> end
> 
> Iterate through items in the "output" array and create a key for the 
> "output_hash" hash using the value of "item.name" as the key, and an 
> empty array as the value for that key.
> 
> I know the output_hash << won't work, that's why I'm asking how I can go 
> about it. I was just using that as a sort of pseudo-code to get my point 
> across.

The same way you assign to a hash element outside a loop: 
output_hash[item.name] = value .  << is only useful with arrays, not 
hashes.

Best,
--
Marnen Laibow-Koser
http://www.marnen.org
marnen@marnen.org
-- 
Posted via http://www.ruby-forum.com/.