title: Filter to exclude elements from array
body: <p>Trying to filter some entries from an array. It's not guaranteed they are in the master array, so I'm testing through an iteration.</p>
  
  <pre><code>total = ['alpha', 'bravo', 'charlie', 'delta', 'echo']
  hide = ['charlie', 'echo']
  
  pick = []
  for i in total
    if !hide.include?(i)
      puts i
      pick.push(i)
    end
  end
  puts pick
  </code></pre>
  
  <p>This isn't working. Is there a better way of providing this kind of filter?</p>