title: Delete first x entires of an array
body: <p>I have an array of items, and I need to delete the first x items of it. Is there a built-in function in the Ruby Array class to do this? I had a search around and only found, what looked like, incredibly messy or inefficient ways to do it.</p>
  
  <p>I'd preferably like something like this:</p>
  
  <pre><code>my_items = [ 'item1', 'item2', 'item3', 'item4' ]
  trimmed_items = my_items.delete(y, x) # deleting x entries from index y
  </code></pre>