title: Angular2 interpolation bracket notation (instead of dot) for variables
body: <p>I'm wondering if there's a Angular2 equivalent to the bracket notation in Javascript that lets you use variables to select an object property. Or a way of doing the same thing.</p>
  
  <p><strong>Consider this code:</strong></p>
  
  <pre><code> let selector = "foo";
   let someObject = {foo: "some content", guu: "some other content"};
   console.log(someObject[selector]); //bracket notation, logs "some content"
  </code></pre>
  
  <p><strong>I've tried the following in Angular2:</strong></p>
  
  <pre><code>  {{someObject[selector]}}
    {{someObject['selector']}}
  </code></pre>
  
  <p>Neither worked. Is there another way of doing it without Javascript?</p>