#Control flow

#Conditionals

if (confidence > 0.5) {
  x = detection.x;
} else {
  x = 0;
}

else if chains:

if (distance < 30) {
  speed = 1.0;
} else if (distance < 100) {
  speed = 0.6;
} else {
  speed = 0.3;
}

#Loops

for over an array:

for (kp in detection.keypoints) {
  if (kp.confidence > 0.5) {
    drawCircle(kp.x, kp.y, 3, "red");
  }
}

while:

while (i < 10) {
  state.history = append(state.history, i);
  i = i + 1;
}

#Existence check

Use isset() to test whether a variable has been initialized — useful for one-time state setup:

if (!isset(state.startTime)) {
  state.startTime = time;
}

#Conditional output

Inside any function or block, return exits early:

if (!isActive()) {
  return (0, 0);
}