<br />
<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_n1erqk9cvetf7g31eopgf225vo, 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 />
static L collectNonNulls(Collection c, S field) {
  ret collectNonNulls(field, c);
}

static L mapMethodLike collectNonNulls(S field, Collection c) {
  new L l;
  if (c != null) for (O a : c) {
    O x = getOpt(a, field);
    if (x != null) l.add(x);
  }
  ret l;
}

/*ifclass Concept
static L collect(Class c, S field) {
  ret collect(list(c), field);
}
endif
TODO: make translator ignore stuff in ifclass until resolved
*/