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<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 />
static int intSum(Collection c, S field) {
  int sum = 0;
  for (O o : unnull(c))
    sum += toInt(getOpt(o, field));
  ret sum;
}

static int intSum(Iterable<Int> l) {
  int sum = 0;
  for (Int i : unnull(l))
    if (i != null) sum += i;
  ret sum;
}

static int intSum(int... l) {
  int sum = 0;
  for (int i : unnull(l))
    sum += i;
  ret sum;
}