From: dblack@...
Date: 2006-01-05T05:14:43+09:00
Subject: Re: Question on iterating a hash

On Thu, 5 Jan 2006, Kevin Olbrich wrote:

>> Wouldn't it be easier to iterate through the keys?  I'm not sure why
>> Phil didn't want to.  (Phil?)
>>
>>    h.keys.select {|k| h[k] == 1}
>>
>
> Since he wants the keys of the hash in an array, wouldn't you need to do
> this..
>
> result = h.keys.select {|k| h[k] == 1}
> result = result.keys

No.  h.keys is an array, and select returns an array.


David

-- 
David A. Black
dblack@wobblini.net

"Ruby for Rails", from Manning Publications, coming April 2006!
http://www.manning.com/books/black