title: Best ruby idiom for "nil or zero"
body: <p>I am looking for a concise way to check a value to see if it is nil or zero.  Currently I am doing something like:</p>
  
  <pre><code>if (!val || val == 0)
    # Is nil or zero
  end
  </code></pre>
  
  <p>But this seems very clumsy.</p>