Counter with Event Callbacks - Dart Typing CST Test

Counter with Event Callbacks — Dart Code

Uses callback functions to handle increment, decrement, and reset events.

void main() {
	int count = 0;

	void onUpdate(int value) => print('Counter: $value');

	void increment(void Function(int) callback) {
		count++;
		callback(count);
	}

	void decrement(void Function(int) callback) {
		count--;
		callback(count);
	}

	void reset(void Function(int) callback) {
		count = 0;
		callback(count);
	}

	increment(onUpdate);
	increment(onUpdate);
	decrement(onUpdate);
	reset(onUpdate);
}

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