title: @ngrx 4 how to filter current loaded data
body: <p>I am working on a new angular 4 plus @ngrx 4 project.</p>
  
  <p>I wish to have a searching function on the loaded data.</p>
  
  <p>For example, all the contacts info have been loaded in the component.
  The contacts list will be filtered which contact name matched with the search text.</p>
  
  <p><a href="https://i.stack.imgur.com/1nRBj.png" rel="noreferrer">Please see screenshot</a></p>
  
  <p>As the data is existed in store and I do not wish to call web api service again.</p>
  
  <p>Any idea or demo code would be appreciated.</p>