title: Left and Right operand of comma operator has no effect (Warning)
body: <p>I'm getting a warning in my constructor in my class, and I've never seen it before. This is what my constructor looks like.</p>
  
  <pre><code>    Account(std::string n = "NULL", std::string i = "0", Stats s = (0,0,1) ) 
          : name(n), id(i), stat(s) {}
  </code></pre>
  
  <p>If I remove any of these commas it results in a compile error, no? 
  Is this warning incorrect, or is there something I can change to fix it?</p>