writable<T> method

@defineHook Computed<T> writable<T>(T getter(), void setter(T), { JoltDebugOption? debug, })

Creates a writable computed hook that can be both read and written.

When set, the setter function is called to update the underlying dependencies.

Parameters:

• getter: Function that computes the current value
• setter: Function that handles value updates
• debug: Optional debug options

Returns: A WritableComputed with custom read/write behavior

Example:

setup(context, props) {
  final firstName = useSignal('John');
  final lastName = useSignal('Doe');
  final fullName = useComputed.writable(
    () => '${firstName.value} ${lastName.value}',
    (value) {
      final parts = value.split(' ');
      firstName.value = parts[0];
      lastName.value = parts[1];
    },
  );

  return () => Text(fullName.value);
}

Implementation

@defineHook
Computed<T> writable<T>(T Function() getter, void Function(T) setter,
    {JoltDebugOption? debug}) {
  return useAutoDispose(() => WritableComputed(getter, setter, debug: debug));
}