Rails: Integer#even?

Documentation
None

Usage
The Integer#even? method is helpful when adding zebra striping to views.

For example:

  <% @customers.each_with_index do |customer, index| %>
    <div style="color:<%= index.even? ? "white" : "gray" %>">
      <%= customer.name %>
    </div>
  <% end %>

Test

require 'rubygems'
require 'active_support'
require 'test/unit'
require 'dust'

unit_tests do
  test "10 is even?" do
    assert_equal true, 10.even?
  end
end