title: Simplest way to combine two strings at compile time with C++11
body: <p>I'm trying to concatenate two compile time strings:</p>
  
  <pre><code>constexpr const char* getString1() { return "abababa"; };
  constexpr const char* getString2() { return "lalalal"; };
  constexpr const char* getString3() { return getString1() + getString2(); }; //wont compile
  </code></pre>
  
  <p>Is there a modern, simple way to do this in C++?</p>