rxdart

问题 I've combined streams from firestore and now I need to sort them by timestamp (descending) . I really don't know much about reactiveX ...I'm using dartRx. I seen a few solutions using a comparator but not really sure how to use it. Class Order{ Timestamp timestamp; } Stream<List<Order>> sortByTimestamp(){ return combineList(order).....//my stream } 回答1: thanks for your question. Here is my way :) return combineList(order).map((orders) => orders.sort(comparator).toList()); 来源： https:/

问题 I am trying to implement bloc pattern in rxdart . I am trying to build todo app type of app . I implemented showing all items in list but what I want is not to show completed and uncompleted items in different part . However I am not able to filter the items based on completed on rxdart . import 'package:rxdart/rxdart.dart'; import '../models/ShoppingItem.dart'; class ShoppingItemBloc { final _shoppingItems = BehaviorSubject<List<ShoppingItem>> (seedValue: []); Observable<List<ShoppingItem>>

问题 I am trying to implement bloc pattern in rxdart . I am trying to build todo app type of app . I implemented showing all items in list but what I want is not to show completed and uncompleted items in different part . However I am not able to filter the items based on completed on rxdart . import 'package:rxdart/rxdart.dart'; import '../models/ShoppingItem.dart'; class ShoppingItemBloc { final _shoppingItems = BehaviorSubject<List<ShoppingItem>> (seedValue: []); Observable<List<ShoppingItem>>

问题 I have three streams like this: final _light1RoomCtlr = BehaviorSubject<String>(); final _light2RoomCtlr = BehaviorSubject<String>(); final _light3RoomCtlr = BehaviorSubject<String>(); Stream<String> get getLight1Room => _light1RoomCtlr.stream; Function(String) get setLight1Room => _light1RoomCtlr.sink.add; Stream<String> get getLight2Room => _light2RoomCtlr.stream; Function(String) get setLight2Room => _light2RoomCtlr.sink.add; Stream<String> get getLight3Room => _light3RoomCtlr.stream;

问题 I just upgraded to rxdart 0.23.1 and suddenly I am getting errors wherever I have used the Observable class. I have read about the breaking changes in the documentation and it has specified to use the rxdart_codemod package which I have integrated in my pubspec.yaml file and running the following command pub global activate rxdart_codemod throws the -bash: pub: command not found error. I have installed flutter properly and flutter doctor also seems to be running fine. Is there some other

问题 I just upgraded to rxdart 0.23.1 and suddenly I am getting errors wherever I have used the Observable class. I have read about the breaking changes in the documentation and it has specified to use the rxdart_codemod package which I have integrated in my pubspec.yaml file and running the following command pub global activate rxdart_codemod throws the -bash: pub: command not found error. I have installed flutter properly and flutter doctor also seems to be running fine. Is there some other

问题 In our Flutter application we have memory leaks and streams not being closed. We traced the source to code such as: Rx.combineLatest(...).asBroadcastStream() The result of RxDart .combineLatest() is a single-subscription stream. Adding .asBroadcastStream() makes the stream conveniently available to our various Flutter displays. However when these displays are closed the streams being combined are still active. 回答1: From the .asBroadcastStream() documentation: The returned stream will

问题 In our Flutter application we have memory leaks and streams not being closed. We traced the source to code such as: Rx.combineLatest(...).asBroadcastStream() The result of RxDart .combineLatest() is a single-subscription stream. Adding .asBroadcastStream() makes the stream conveniently available to our various Flutter displays. However when these displays are closed the streams being combined are still active. 回答1: From the .asBroadcastStream() documentation: The returned stream will

问题 I'm developing with reactive components streams/observables with Rx_command, Rx_dart Problem: In my Flutter app I have inherited widget that can be called anywhere with: FooProvider.of(context).foo.method1... I need to make a first call to the method when the UI loads at first time I can't use init.state because it's impossible I use didchangedependencies it works but.. ... every time the ui reloads, the didchangedependencies is called and the method is executed once again. I don't want it to

问题 from this link on my web server as http://instamaker.ir/api/v1/getPersons i'm trying to get result and printing avatar from that result, unfortunately my implementation with rxDart and Bloc don't get result from this response and i don't get any error server response this simplified result: { "active": 1, "name": "my name", "email": " 3 ", "loginType": " 3 ", "mobile_number": " 3 ", ... "api_token": "1yK3PvAsBA6r", "created_at": "2019-02-12 19:06:34", "updated_at": "2019-02-12 19:06:34" }