title: Combining many rake tasks into one rake task
body: <p>Instead of running each rake task individually like this:</p>
  
  <pre><code>rake db:drop
  rake db:create
  rake db:migrate
  rake db:load
  </code></pre>
  
  <p>I want to run one rake task that does all for.</p>
  
  <p>This is what I have for my rakefile:</p>
  
  <pre><code>desc 'This rebuilds development db'
  namespace :rebuild_dev do
   Rake::Task["db:drop"].execute
   Rake::Task["db:create"].execute
   Rake::Task["db:migrate"].execute
   Rake::Task["db:load"].execute
  end
  </code></pre>
  
  <p>The above doesn't work when I run it.</p>