title: What is string_view?
body: <p><code>string_view</code> was a proposed feature within the C++ Library Fundamentals TS(<a href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2014/n3921.html" rel="noreferrer">N3921</a>) added to C++17</p>
  
  <p>As far as i understand it is a type that represent some kind of string "concept" that is a view of any type of container that could store something viewable as a string.</p>
  
  <ul>
  <li>Is this right ? </li>
  <li>Should the canonical
  <code>const std::string&amp;</code> parameter type become <code>string_view</code> ?</li>
  <li>Is there another important point about <code>string_view</code> to take into consideration ?</li>
  </ul>