From: Ryan Davis <ryand-ruby@...>
Date: 2013-01-29T18:25:21+09:00
Subject: Re: Please explain in English


On Jan 28, 2013, at 12:13 , Jesús Gabriel y Galán <jgabrielygalan@gmail.com> wrote:

> On Mon, Jan 28, 2013 at 7:16 PM, Joel Pearson <lists@ruby-forum.com> wrote:
>> "Jesús Gabriel y Galán" <jgabrielygalan@gmail.com> wrote in post
>> #1094106:
>>> string.downcase.scan(/\w+/) {|word| res[word] += 1}
>> 
>> I tried benchmarking out of curiosity and that is a lot faster! Nicely
>> done.
> 
> I guess the reason is that you avoid the intermediate arrays.

I suspect only scanning once is much more important than the extra arrays.