title: Disable particular dates in Angular Material Date picker
body: <p>I'm trying to us Angular 6 Material datepicker for one of my projects. I need to disable particular dates or give the user an option to choose particular dates(can be some random dates).</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;mat-card&gt;
      &lt;input matInput [matDatepicker]="picker" placeholder="Choose a date"&gt;
      &lt;mat-datepicker-toggle matSuffix [for]="picker"&gt;&lt;/mat-datepicker-toggle&gt;
      &lt;mat-datepicker #pickers&gt;&lt;/mat-datepicker&gt;
      &lt;app-date-picker&gt;&lt;/app-date-picker&gt;
    &lt;/mat-card&gt;
  ``
  </code></pre>