add type to workers

@@ -160,6 +160,16 @@ class RxBool extends _RxImpl<bool> {
   RxBool([bool initial]) {
     _value = initial;
   }
+
+  bool operator &(bool other) => other && value;
+
+  bool operator |(bool other) => other || value;
+
+  bool operator ^(bool other) => !other == value;
+
+  String toString() {
+    return value ? "true" : "false";
+  }
 }
 
 class RxDouble extends _RxImpl<double> {

@@ -3,7 +3,7 @@ import 'package:get/get.dart';
 import '../rx_core/rx_interface.dart';
 import 'utils/debouncer.dart';
 
-Worker ever(RxInterface listener, Function(dynamic) callback,
+Worker ever<T>(RxInterface<T> listener, Function(T) callback,
     {bool condition = true}) {
   StreamSubscription sub = listener.subject.stream.listen((event) {
     if (condition) callback(event);