title: How to iterate over a firebase2 list observable?
body: <p>I have a list observable of objects that I am trying to iterate over to compare a list object property to a local variable.</p>
  
  <p>I can loop over the objects in the list in a template but can't see how to in the component logic.</p>
  
  <p>How can I do this outside of the template?</p>
  
  <p>This is the closest I have gotten to a working iterator so far.</p>
  
  <pre><code>constructor(af: AngularFire) {
      this.competitors = af.database.list('/competitors');
  }
  this.competitors.forEach(competitor) {
      console.log(competitor);
  }
  </code></pre>
  
  <p>I'm sorry if this is a question is poorly constructed, I am still quite new to Angular2 and Firebase.</p>