title: Angular 2 Dropdown Options Default Value without using index
body: <p>How to set a default value , I cannot use index because the default value depends on data.</p>
  
  <pre><code>&lt;select [(ngModel)]="task.language" &gt;
    &lt;option *ngFor="let language of languages" [selected]="user.language"  &gt;
        {{language}}
    &lt;/option&gt;
  &lt;/select&gt;
  </code></pre>
  
  <p>"user" is data filled with connected user information (language, firstname, lastname, ...)</p>