Signals are the cornerstone of reactivity in
solidart. They contain values that change over time; when you change a signal's value, it automatically updates anything that uses it.
Let's see how to create a Signal:
Next create the signal with:
final counter = Signal(0);
The argument passed to the create call is the initial value, and the return value is the signal.
To retrieve the current value, you can use:
print(counter.value); // prints 0 // or print(counter());
To change the value, you can use:
// Increments by 1 counter.value++; // Set the value to 2 counter.value = 2; // equivalent to counter.set(2); // Update the value based on the current value counter.updateValue((value) => value * 2);