title: how to set a default value in ng-options AngularJS
body: <p>I would like to set a default value to my select component using angular <code>ng-options</code>
  I have seen other topics about this question but i try to use it in my case but not solve.. 
  So i have a select component </p>
  
  <pre><code>&lt;select ng-options="dis.entidade.idEntidade as dis.entidade.nome for dis in distritos" ng-model="distrito.entidade.idEntidade" class="form-control"&gt;
      &lt;option&gt;&lt;/option&gt;   
  &lt;/select&gt;
  </code></pre>
  
  <p>and i would like to set a defaul value. </p>