title: What is the reason for not having one-time binding in Angular
body: <p>I have tried googling this long time but could not find valid answer. Why there is no one time binding in angular 2. I dont think <code>ChangeDetectionStrategy</code> is one time binding solution. Why did angular team did not consider to include this feature? Did they see no performance benefit implementing this. If we are binding data only once like the titles and headers etc then one way binding is great to go right? Since we have less watchers for one time binding did they ignore it? Please let me know.</p>
  
  <p><strong>EDIT</strong> one time binding at property level is possible in angular 1 using {{::name}} but this was not included in angular 2. Why the syntax was removed. Any help is greatly appreciated</p>