function last() {
		return $this->skip(($ofs=count($this->query)-$this->ptr)?$ofs-1:0);
	}
function last() {
		return $this->skip(($ofs=count($this->query)-$this->ptr)?$ofs-1:0);
	}
function last ( ) { return $ this -> skip ( ( $ ofs = count ( $ this -> query ) - $ this -> ptr ) ? $ ofs - 1 : 0 ) ; }
Map to last record in cursor
@return mixed
Map to last record in cursor