// download all .torrent links on the btjunkie frontpage
//
// more fun with mechanize @
// http://tramchase.com/scrape-myspace-youtube-torrents-for-fun-and-profit

agent = WWW::Mechanize.new
agent.get("http://btjunkie.org/")
links = agent.page.search('.tor_details tr a')
hrefs = links.map { |m| m['href'] }.select { |u| u =~ /\.torrent$/ } # just links ending in .torrent
FileUtils.mkdir_p('btjunkie-torrents') # keep it neat
hrefs.each { |torrent|
  filename = "btjunkie-torrents/#{torrent[0].split('/')[-2]}"
  puts "Saving #{torrent} as #{filename}"
  agent.get(torrent).save_as(filename)
}

// fetch all img's from a myspace profile's .friendSpace div
// more @ http://tramchase.com/scrape-myspace-youtube-torrents-for-fun-and-profit

agent = WWW::Mechanize.new
agent.get("http://myspace.com/graffitiresearchlab")
links = agent.page.search('.friendSpace img') # found w/ firebug
FileUtils.mkdir_p 'myspace-images' # make the images dir
links.each_with_index { |link, index| 
  url = link['src']
  puts "Saving thumbnail #{url}"
  agent.get(url).save_as("myspace-images/top_friend#{index}_#{File.basename url}")
}

// fun with mechanize
// more @ http://tramchase.com/scrape-myspace-youtube-torrents-for-fun-and-profit

agent = WWW::Mechanize.new
url = "http://gdata.youtube.com/feeds/api/standardfeeds/most_viewed" # all time
page = agent.get(url)
# parse again w/ Hpcricot for some XML convenience
doc = Hpricot.parse(page.body)
# pp (doc/:entry) # like "search"; cool division overload
images = (doc/'media:thumbnail') # use strings instead of symbols for namespaces
FileUtils.mkdir_p 'youtube-images' # make the images dir
urls = images.map { |i| i[:url] }
urls.each_with_index do |file,index|
  puts "Saving image #{file}"
  agent.get(file).save_as("youtube-images/vid#{index}_#{File.basename file}")
end

// from a comment by Steven Bristol on errtheblog.com

I just wanted to share a really killer event handling tidbit:

Generally you do something like:

jQuery(’.class’).click(function(){//whatever});

Everyone knows this can be rewritten as:

jQuery(’.class’).bind(‘click’, function(){//whatever});

But sometimes you need to unbind something:

jQuery(’.class’).unbind(‘click’, function(){//});

The problem with this is that it will unbind all the click events, not just yours. So if multiple bits of javascript have a click event handler for ’.class’, unbinding removes them all. (This is because there is no way to identify an anonymous function.)

But jQuery is so good that there is a way to handle this: Namespacing your events:

jQuery(’.class’).bind(‘click.namespace’, function(){//}); 
jQuery(’.class’).unbind(‘click.namespace’);

or for reinitializing an element added via ajax:

jQuery(’.class’)unbind(‘click.namespace’).bind(‘click.namespace’, function(){//});

// fetch & parse RSS into an object

require 'rss/2.0'
require 'open-uri'

class RssReader

  def parseFeed (url, length)
    feed_url = url
    output = "";
    open(feed_url) do |http|
      response = http.read
      result = RSS::Parser.parse(response, false)
      output = "\"feedTitle\">#{result.channel.title}
" 
      result.items.each_with_index do |item, i|
        output += "
\"#{item.link}\">#{item.title}" if ++i < length  
      end 
      output += "
" 
    end
    return output
  end

end