code: def filter(array, predicates, ty=None):
      
      weld_obj = WeldObject(encoder_, decoder_)
  
      array_var = weld_obj.update(array)
      if isinstance(array, WeldObject):
          array_var = array.obj_id
          weld_obj.dependencies[array_var] = array
  
      predicates_var = weld_obj.update(predicates)
      if isinstance(predicates, WeldObject):
          predicates_var = predicates.obj_id
          weld_obj.dependencies[predicates_var] = predicates
  
      weld_template = """
         result(
           for(
             zip(%(array)s, %(predicates)s),
             appender,
             |b, i, e| if (e.$1, merge(b, e.$0), b)
           )
         )
      """
      weld_obj.weld_code = weld_template % {
          "array": array_var,
          "predicates": predicates_var}
  
      return weld_obj
docs: Returns a new array, with each element in the original array satisfying the
      passed-in predicate set to `new_value`
  
      Args:
          array (WeldObject / Numpy.ndarray): Input array
          predicates (WeldObject / Numpy.ndarray<bool>): Predicate set
          ty (WeldType): Type of each element in the input array
  
      Returns:
          A WeldObject representing this computation