title: ng show in ng repeat Ionic
body: <p>I want hide ion-row if <code>value == null</code>
  I use this code but it dose not work</p>
  
  <pre><code>&lt;ion-row ng-show="item.Sex!= null"&gt;
                  &lt;ion-col col-6&gt;
                      &lt;h5 class="title"&gt;Porn Date&lt;/h5&gt;
                  &lt;/ion-col&gt;
                  &lt;ion-col col-2&gt;
                      &lt;h5 class="data"&gt;{{ item.Sex}}&lt;/h5&gt;
                  &lt;/ion-col&gt;
              &lt;/ion-row&gt;
  </code></pre>
  
  <p>here the response list data</p>
  
  <pre><code>DayAfterPorn:null
  Expected: null
  Id:2
  IsBuy:false
  IsDead:false
  IsDeleted: false
  Num : 2
  Sex: null## Heading ##
  </code></pre>
  
  <p>Why ng show dose not work even <code>value == null</code></p>