title: convert utf-8 to unicode in ruby
body: <p>The UTF-8 of "龅" is E9BE85 and the unicode is U+9F85. Following code did not work as expected:</p>
  
  <pre><code>irb(main):004:0&gt; "龅"
  =&gt; "\351\276\205"
  irb(main):005:0&gt; Iconv.iconv("unicode","utf-8","龅").to_s
  =&gt; "\377\376\205\237"
  </code></pre>
  
  <p>P.S: I am using Ruby1.8.7.</p>