ngIf and array values

[thorn0]

Consider the following code:

  <table ng-if="items" border='10'>
    <tr ng-repeat="item in items track by item.id">
      ...
      <td><a ng-click="removeFromList(item)">Remove</a>
      </td>
    </tr>
  </table>

removeFromList modifies the existing array, so the array is always the same object. After the user deletes all the items, we might expect the table will be removed from the DOM because of ngIf and the fact that empty arrays are considered falsy in ngIf, ngShow, etc. However, it doesn't happen.

A plunk to play with: http://plnkr.co/edit/FVM0k2K3t4HutA4pZDk4?p=preview

[joshkurz]

why wouldn't you just check for the length to equal 0, if that is your requirement? http://plnkr.co/edit/ritjXTukVNhFAHngpwal?p=preview

[thorn0]

@joshkurz Because there's a certain convention about truthiness of expressions that I thought I could rely on.

[lgalfaso]

This looks like a duplicate of #3969 (and many other), there is a PR at #4005 that fixes this issue