title: How to output C++ range-v3 to ostringstream?
body: <p>This range-v3 example doesn't compile with Visual C++ version 15.9:</p>
  
  <pre><code>auto letters = ranges::view::iota('a','g');
  std::ostringstream out;
  out &lt;&lt; letters;
  </code></pre>
  
  <p>Is this by design? What is the way to output ranges to <code>ostringstream</code>?</p>