anchor.diff:          <tr>
             <td><strong><%= link_to user.name, user %></strong></td>
             <td><%= user.admin %></td>
  -          <td><%= link_to 'Edit', edit_user_path(user) %></td>
  -          <td><%= link_to 'Destroy', user, method: :delete, data: { confirm: 'Are you sure?' } %></td>
  +          <% if current_user.admin? %>
  +            <td><%= link_to 'Edit', edit_user_path(user) %></td>
  +            <td><%= link_to 'Destroy', user, method: :delete, data: { confirm: 'Are you sure?' } %></td>
  +          <% end %>
           </tr>
         <% end %>
       </tbody>
  
positive.code:       <tr>
          <th>Name</th>
          <th>Admin?</th>
          <th colspan="3"></th>
        </tr>
      </thead>
    
  
negative.code:   
    <br>
    
    <% if current_user.admin? %><%= link_to 'New User', new_user_path %><% end %>
  </div>