title: how to slice an item from an array
body: <p>Can someone please help me with some ionic code?<br>
  I have have an array of items displayed using <code>ngFor</code>. When a user click on a certain item, that item is then pushed to another page which have full description of the item and it have a complete button.<br>
  When a user clicks the complete button the item should be removed from the original array. I just don't know how to slice an array from a different component. Please help</p>