title: How to use variable inside %w{}
body: <p>I want to use variable insite %w{} but this is generating only string.</p>
  
  <p>I have try with</p>
  
  <pre><code>a="hello",
  b="world"
  %w{a b}
  </code></pre>
  
  <p>But this is display  <code>["a", "b"]</code> I want to display ["hello","world"]</p>