From: redrhodes <richstep911@...>
Date: 2005-12-23T09:12:50+09:00
Subject: What's the "#" for?

I've started on my first ruby project and came accross the following
code from:
http://habtm.com/articles/2005/11/13/your-site-doesnt-look-too-good-in-x-browser

Since I've managed to understand most of what's going on here, but I
still can't find a reference on how and why to use "#".    From
following the code it looks like an escape character for a variable to
be populated when enclosed within quotes.  Does anyone have enough
understanding on the syntax to help a ruby nubie?

class Hash
  def to_sql
    sql = keys.sort {|a,b| a.to_s<=>b.to_s}.inject([[]]) do |arr, key|
      arr[0] << "#{key} = ?"
      arr << self[key]
    end
    [sql[0].join(' AND ')] + sql[1..-1]
  end
end

Thanks,
Richard