gistfile1.rb

module URI
  # When given a string, returns true if the string represents an http or https URL 
  # When given no arguments, returns a lambda with the same properties.
  #
  # URI.valid_link?("http://rapportive.com")
  #    # => true
  # ["httq://rapportive.com", "http://rapportive.com"].select(&URI.valid_link?)
  #    # => ["http://rapportive.com"]
  def self.valid_link?(*args)
    if args.present?
      !!(URI.parse(*args).is_a?(URI::HTTP) rescue nil)
    else
      URI.method(:valid_link?)
    end
  end
end