[PD] pass values when they changed

[rainer kohlberger]

hello,


is there an object/external, that let messages pass only when they  
changed to the previous one?
(as demonstrated in the patch below and in the example message list)

rainer.


--


0 --> pass
0
0
1 --> pass
1
1
1
1
0 --> pass
0


--



#N canvas 171 58 404 435 10;
#X obj 191 341 spigot;
#X msg 203 172 1;
#X msg 242 171 2;
#X obj 242 194 alternate;
#X floatatom 242 218 5 0 0 0 - - -;
#X floatatom 300 218 5 0 0 0 - - -;
#X msg 243 341 0;
#X msg 128 126 do this;
#X msg 191 126 do that;
#X obj 126 64 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 1 1
;
#X obj 203 62 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
;
#X obj 190 378 print;
#X msg 125 32 1;
#X msg 157 32 0;
#X msg 204 31 1;
#X msg 234 30 0;
#X obj 127 2 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X obj 206 2 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X obj 126 88 metro 200;
#X obj 203 87 metro 200;
#X obj 242 239 !=;
#X obj 231 290 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
1;
#X connect 0 0 6 0;
#X connect 0 0 11 0;
#X connect 1 0 3 0;
#X connect 2 0 3 0;
#X connect 3 0 4 0;
#X connect 3 1 5 0;
#X connect 4 0 20 0;
#X connect 5 0 4 0;
#X connect 5 0 20 1;
#X connect 6 0 0 1;
#X connect 7 0 0 0;
#X connect 7 0 1 0;
#X connect 8 0 0 0;
#X connect 8 0 2 0;
#X connect 9 0 18 0;
#X connect 10 0 19 0;
#X connect 12 0 9 0;
#X connect 13 0 10 0;
#X connect 14 0 10 0;
#X connect 15 0 9 0;
#X connect 16 0 12 0;
#X connect 16 0 13 0;
#X connect 17 0 14 0;
#X connect 17 0 15 0;
#X connect 18 0 7 0;
#X connect 19 0 8 0;
#X connect 20 0 21 0;
#X connect 21 0 0 1;