anchor.diff:  binary_fun_result_type("json_value") ->         #bind{type=json,default=[]};
   binary_fun_result_type("json_diff") ->          #bind{type=json,default=[]};
   binary_fun_result_type("phash2") ->             #bind{type=integer,default=0};
  +binary_fun_result_type("map_get") ->            #bind{type=map,default=?nav};
  +binary_fun_result_type("map_merge") ->          #bind{type=map,default=?nav};
  +binary_fun_result_type("map_remove") ->         #bind{type=map,default=?nav};
  +binary_fun_result_type("map_with") ->           #bind{type=map,default=?nav};
  +binary_fun_result_type("map_without") ->        #bind{type=map,default=?nav};
   binary_fun_result_type(_) ->                    #bind{type=number,default=?nav}.
   
   
  
positive.code:             , to_tuple, to_list, to_map, to_term, to_binterm, to_pid, from_binterm
              , to_decimal, from_decimal, to_timestamp, to_datetime, to_ipaddr
              , to_json, json_to_list, json_arr_proj, json_obj_proj, json_value, json_diff, md5
              , byte_size, bit_size, map_size, nth, sort, usort, reverse, last, remap, phash2
              , '[]', '{}', ':', '#keys', '#key','#values','#value', '::'
              , mfa
              ]).
  
negative.code: binary_fun_bind_type2("json_value") ->          #bind{type=json,default=[]};
  binary_fun_bind_type2("json_diff") ->           #bind{type=json,default=?nav};
  binary_fun_bind_type2("phash2") ->              #bind{type=integer,default=27};
  binary_fun_bind_type2("map_get") ->             #bind{type=map,default= #{}};
  binary_fun_bind_type2("map_merge") ->           #bind{type=map,default= #{}};
  binary_fun_bind_type2("map_remove") ->          #bind{type=map,default= #{}};
  binary_fun_bind_type2("map_with") ->            #bind{type=map,default= #{}};
  binary_fun_bind_type2("map_without") ->         #bind{type=map,default= #{}};
  binary_fun_bind_type2(_) ->                     #bind{type=number,default=?nav}.
  
  binary_fun_result_type(B) when is_binary(B) ->  binary_fun_result_type(binary_to_list(B));
  