title: slice vs extract! rails 5
body: <p>I was making some reviews today to an old code and this arises, might be a silly question if so apologize in advance, but is there any real difference between slice and extract! functions (for hashes), I looked in the documentation and there is no obvious difference between them (at least for me):</p>
  <ul>
  <li><a href="https://apidock.com/rails/Hash/extract%21" rel="nofollow noreferrer"><code>Hash#extract!</code></a></li>
  <li><a href="https://apidock.com/rails/Hash/slice" rel="nofollow noreferrer"><code>Hash#slice</code></a></li>
  </ul>
  <p>Didn't found anything on the community either, thx in advance.</p>