title: Get unique array of Classes
body: <p>I have an array of objects:</p>
  
  <pre><code>@searches
  </code></pre>
  
  <p>It could return something like:</p>
  
  <pre><code>--- !ruby/object:Profile
  attributes:
    id: 2
    name: Basti Stolzi
    username: paintdat
    website: ''
    biography: ''
    created_at: 2013-06-10 19:51:29.000000000 Z
    updated_at: 2013-06-15 10:10:17.000000000 Z
    user_id: 2
  
  --- !ruby/object:Essential
  attributes:
    id: 4
    description: ! '#paintdat'
    user_id: 1
    created_at: 2013-06-16 08:19:47.000000000 Z
    updated_at: 2013-06-16 08:19:47.000000000 Z
    photo_file_name: Unknown-1.jpeg
    photo_content_type: image/jpeg
    photo_file_size: 101221
    photo_updated_at: 2013-06-16 08:19:46.000000000 Z
  
  --- !ruby/object:Essential
  attributes:
    id: 3
    description: ! '@user_mention_2 well done! #paintdat'
    user_id: 1
    created_at: 2013-06-16 07:56:55.000000000 Z
    updated_at: 2013-06-16 08:00:24.000000000 Z
    photo_file_name: Unknown.jpeg
    photo_content_type: image/jpeg
    photo_file_size: 135822
    photo_updated_at: 2013-06-16 07:56:55.000000000 Z
  </code></pre>
  
  <p>Now I'd like to get an unique array of the classes within that array like:</p>
  
  <pre><code>--- !ruby/class 'Profile'
  
  --- !ruby/class 'Essential'
  </code></pre>
  
  <p>It would be nice to do this without 2 loops. Hope somebody could help me out! &lt;3</p>