l37.1-37.1c59.28-59.26 59.28-155.7 0-214.96z"/>
      </svg></a> </h2>
<section aria-labelledby="toc_use-of-observable-methods-and-properties">
<p>In order for Ember to observe when you make a change to an enumerable, you need
to use special methods that <code>Ember.Enumerable</code> provides. For example, if you add
an element to an array using the standard JavaScript method <code>push()</code>, Ember will
not be able to observe the change, but if you use the enumerable method
<code>pushObject()</code>, th