From: Josh Cheek <josh.cheek@...>
Date: 2011-10-20T13:36:52+09:00
Subject: Re: why doesn't this work?

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On Wed, Oct 19, 2011 at 11:29 PM, Sam Duncan <sduncan@wetafx.co.nz> wrote:

>
> ruby-1.9.2-p290 :002 > def find_frequency(prose, word)
> ruby-1.9.2-p290 :003?>   prose.scan(/\b(#{word})\b/im).**length
> ruby-1.9.2-p290 :004?>   end
>
>
This was my approach, too. But by the time you make it robust, it's no
longer elegant. i.e. it should really be escaped, leading to:

def find_frequency(prose, word)
  regex = Regexp.new "\\b#{Regexp.escape word}\\b", Regexp::IGNORECASE
  prose.scan(regex).length
end

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