title: Is it possible to use std::string in a constexpr?
body: <p><em>Using C++11, Ubuntu 14.04, GCC default toolchain</em>.</p>
  
  <p>This code fails:</p>
  
  <pre><code>constexpr std::string constString = "constString";
  </code></pre>
  
  <blockquote>
    <p>error: the type ‘const string {aka const std::basic_string}’ of
    constexpr variable ‘constString’ is not literal... because...
    ‘std::basic_string’ has a non-trivial destructor</p>
  </blockquote>
  
  <p>Is it possible to use <code>std::string</code> in a<code>constexpr</code>? (apparently not...) If so, how? Is there an alternative way to use a character string in a <code>constexpr</code>?</p>