isfirst.pd

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#X obj 21 120 f;
#X obj 21 144 == 0;
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#X msg 149 247 1;
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#X obj 21 324 outlet;
#X obj 21 99 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144 -1
-1;
#X obj 191 75 inlet;
#X msg 191 99 0;
#X text 11 6 /// BANG LEFT INLET. OUTPUTS A BANG ON LEFT OUTLET IF
THIS IS THE FIRST BANG WE HAVE RECEIVED \, AND A BANG ON THE RIGHT
OUTLET OTHERWISE. RESET STATE BY BANGING THE RIGHT INLET.;
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-1 -1;
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-1;
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#X connect 3 0 0 1;
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#X connect 9 0 0 1;
#X connect 12 0 11 0;
#X connect 13 0 4 0;