oops.rb

require 'rubygems'
require 'typhoeus'
require 'json'

class Migreme
  include Typhoeus
  remote_defaults :on_success => lambda {|response| response.body},
                  :on_failure => lambda {|response| puts "error code: #{response.code}"},
                  :base_uri   => "http://migre.me"

  define_remote_method :add, :path => '/api.xml?url=http://:urlid'
end

# here's and example of memoization
migreme_api = []
100.times do |i|
  migreme_api << Migreme.add(:urlid => i)
end

# this next part will actually make the call. However, it only makes one
# http request and parses the response once. The rest are memoized.
migreme_api.each {|s| puts s}

# <item>
#   <title>XML Migre.me</title>
#   <error>1</error>
#   <errormessage>Limite de 30 URLs por hora excedido. Por favor, aguarde alguns minutos</errormessage>
#   <created_at>Thu, 23 Jul 2009 14:02:03 -0300</created_at>
#   <source>api</source>
#   <date>2009-07-23 14:02:03</date>
#   <id></id>
#   <url>http://99</url>
#   <migre>http://migre.me/</migre>
#   <category>free</category>
# </item>