title: How to create a vector of strings from a vector of string_view without iteration?
body: <p>I have the following vector:</p>
  
  <pre><code>std::vector&lt;std::string_view&gt; const keys{"A1", "A2", "A3", "B1", "C1"};
  </code></pre>
  
  <p>I want to create a vector of <code>std::string</code> out of it without iterating over it.</p>