title: What does %i or %I do in Ruby?
body: <p>What's the meaning of <code>%i</code> or <code>%I</code> in ruby?</p>
  <p>I searched Google for</p>
  <pre><code>&quot;%i or %I&quot; ruby
  </code></pre>
  <p>but I didn't find anything relevant to Ruby.</p>