once<T> method
Implementation
ZenWorkerHandle once<T>(ValueNotifier<T> obs, void Function(T) callback) {
return _createWorker(() => ZenWorkers.once<T>(obs, callback), 'once');
}
ZenWorkerHandle once<T>(ValueNotifier<T> obs, void Function(T) callback) {
return _createWorker(() => ZenWorkers.once<T>(obs, callback), 'once');
}