From: Robert Klemme <shortcutter@...>
Date: 2011-11-12T08:21:16+09:00
Subject: Re: The fastest way to read files

On Sat, Nov 12, 2011 at 12:20 AM, Robert Klemme
<shortcutter@googlemail.com> wrote:
> On Fri, Nov 11, 2011 at 10:07 PM, Ryan Davis <ryand-ruby@zenspider.com> wrote:
>>
>> On Nov 11, 2011, at 04:50 , Robert Klemme wrote:
>>
>>> # ensure every word is only once in memory
>>> words = Hash.new {|h,k| k.freeze; h[k] = k}
>>
>> AFAIK, Ruby hashes have (almost) always frozen their keys.
>
> I know.  That's the reason why I do the freeze in the block.

PS: It's true for String keys only.

-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/