title: How to print unsigned char* in NSLog()
body: <p>Title pretty much says everything.</p>
  
  <p>would like to print (NOT in decimal), but in unsigned char value (HEX).
  example</p>
  
  <pre><code>unsigned char data[6] = {70,AF,80,1A, 01,7E};
  NSLog(@"?",data); //need this output : 70 AF 80 1A 01 7E
  </code></pre>
  
  <p>Any idea? Thanks in advance.</p>