title: How can I show C++ code documentation in Xcode 9.3?
body: <p>I´m developing software based on C++ in Xcode and want to have (at least) the same convenience for code documentation as if I was developing for Swift or objc. </p>
  
  <p>Example:</p>
  
  <pre><code>std::string myString("hello");
  if (myString.empty()) {
      // do something
  }
  </code></pre>
  
  <p>If I want to know exactly what <code>.empty()</code> does, I would like to Option-Click on the function and get the documentation overlay with information from e.g. <a href="http://en.cppreference.com/w/cpp/string/basic_string/empty" rel="noreferrer">http://en.cppreference.com/w/cpp/string/basic_string/empty</a>, exactly as it does for objc and Swift.</p>
  
  <p>How is this possible?</p>
  
  <p>Current output just looks like this:
  <a href="https://i.stack.imgur.com/HqWS8.png" rel="noreferrer"><img src="https://i.stack.imgur.com/HqWS8.png" alt="enter image description here"></a></p>