title: Angular Material 2 Select: avoid comparison by reference
body: <p>By default angular material 2 select component, makes a comparison by reference with === (equality operator).</p>
  
  <p>I found the implementation <a href="https://github.com/angular/material2/blob/master/src/lib/select/select.ts" rel="nofollow noreferrer">here</a>: line 600</p>
  
  <p>Is there a way to enforce deep comparison with equality operator over certain object types, or maybe workaround which will compare objects by specific fields.</p>
  
  <p>Thank you</p>