title: Fastest way to clear filter from ExtJs store when filter is applied by using filterBy()
body: <p>I am using ExtJS 4.1. I am using stores's <code>clearFilter()</code> to remove the filter from the store. I am applying filter to the store by using <code>filterBy</code> method. I am filtering all the records where name is not Ronaldo.</p>
  
  <p>After clearing the filter, I load a view which contains a grid (attached to store). But when I load the grid, I can still see that filter is not cleared.
  The store is local store. I have not applied any grouping on the store. Store is only using one model.</p>
  
  <pre><code>myStore.filterBy(function (record) {
      if (record.get('Name') != 'Ronaldo') {
          return true;
      }
  });
  </code></pre>
  
  <p>While all this is working fine, but when I clear the filter by using <code>clearFilter()</code>, it is taking some time. Is there any faster\better\correct way to clear the filter on a store when filter is applied by using <code>filterBy()</code>?</p>