gareth

<div class="left-main">
  <p class="original-site">RECENT DESIGNS</p>
    <% @articles.each.with_index do |article, i| %>
    <% if i % 4 == 0 %>
      <%= link_to(image_tag(article.main_image_url.to_s), article, {:class => 'dock-item'}) %>
    <% else %>
      <%= link_to(image_tag(article.main_image_url.to_s), article, {:class => 'dock-item2'}) %>   
    <% end %>
    <% end %>  
  </div>

gareth

require 'test/unit/assertions'
include Test::Unit::Assertions
assert_equal "1.9.2", RUBY_VERSION

# A Ruby meta-programming puzzle for polite programmers.

# This puzzle was created by Matt Wynne (@mattwynne) on 2011-04-10 inspired by Jim Weirich's
# talk at the Scottish Ruby Conference 2011.
#
# The challenge is: you have a class Foo which you want to monkey-patch, but politely.

gareth

<% clients = @clients.select { |c| c.clientID == 2 } %>
<%= clients.map(&:clientID) %>