joho

<ul>
  <% User.all.with_item_counts do |user| %>
    <li><%= user.username %> - Items: <%= user.calculated_item_count %>
  <% end %>
</ul>

metaskills

if Rails.version == '2.3.8' && Gem.available?('mongrel', Gem::Requirement.new('~>1.1.5')) && self.class.const_defined?(:Mongrel)
  
  # Pulled right from latest rack. Old looked like this in 1.1.0 version.
  # 
  # def [](k)
  #   super(@names[k] ||= @names[k.downcase])
  # end
  # 
  module Rack