<br />
<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_u2iuh57o3husf0kaiqd9vi20ql, O_RDWR) failed: No space left on device (28) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
<br />
<b>Warning</b>:  session_start(): Failed to read session data: files (path: /var/lib/php/sessions) in <b>/var/www/tb-usercake/models/config.php</b> on line <b>51</b><br />
!7

sclass Calculation {
  O f;
  OKOrError result;
  
  *() {}
  *(O *f) {}
  
  void calc() {
    try {
      result = OKOrError_ok(callF(f));
    } catch e {
      result = OKOrError_error(e);
    }
  }
}

p {
  Calculation c = new Calculation(f now);
  c.calc();
  print("Result: " + c.result);
}