title: Rails routing to root
body: <p>When setting up the root route, is there any compelling reason to choose this syntax:</p>
  
  <pre><code>map.root :controller =&gt; "login", :action =&gt; 'show'
  </code></pre>
  
  <p>over this syntax:</p>
  
  <pre><code>match "/" =&gt; "login#show"
  </code></pre>
  
  <p>The second syntax will allow you to use the <code>:constraints</code> option, where the first wont.  Is there any reason to use the first option?</p>