From: Justin Collins <collinsj@...>
Date: 2006-10-29T11:59:12+09:00
Subject: Re: hash.collect

Joe Ruby MUDCRAP-CE wrote:
> collect seems to work on a hash:
>
> h = {'a'=>'1', 'b'=>'2'}
>
> params = h.collect {|k, v| "#{k}=#{v}"}.join('&')
>
> Yet collect isn't listed as a method of hash:
> http://www.ruby-doc.org/core
>
> Is it undocumented, or is some magic going on behind the scenes -- such 
> as the hash getting converted to an array?
>
> Thanks,
> Joe
>
>   

No, no real magic: "collect" is part of the Enumerable module, which is 
mixed into Hash (and other things) and implements this functionality.

-Justin

[1]http://ruby-doc.org/core/classes/Enumerable.html