att*!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!C!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!r bob::z
defred(x) { this.z - x }

assert]e!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!find_last_not_ofb::z
defred(x) { this.z - x }
asser(3))
