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<b>Warning</b>:  session_start(): open(/var/lib/php/sessions/sess_isip2sb34qphpucotv8r1kmugm, 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 />
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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 />
// f: func -> A
static <A> IterableIterator<A> iteratorFromFunction(fO f) {
  ret new IterableIterator<A>() {
    A a;
    bool done;
    
    public bool hasNext() {
      getNext();
      ret !done;
    }
    
    public A next() {
      getNext();
      if (done) fail();
      A _a = a;
      a = null;
      ret _a;
    }
    
    void getNext() {
      if (done || a != null) ret;
      a = (A) callF(f);
      done = a == null;
    }
  };
}