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https://github.com/hoc081098/rxdart_ext
Some extension methods and classes built on top of RxDart. Companion with RxDart
https://github.com/hoc081098/rxdart_ext
flutter-bloc-pattern-rxdart flutter-bloc-rxdart flutter-rx flutter-rxdart rxdart rxdart-bloc rxdart-debug-operator rxdart-ext rxdart-extension rxdart-extensions rxdart-flutter rxdart-helper rxdart-redux
Last synced: 7 days ago
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Some extension methods and classes built on top of RxDart. Companion with RxDart
- Host: GitHub
- URL: https://github.com/hoc081098/rxdart_ext
- Owner: hoc081098
- License: mit
- Created: 2020-10-29T09:21:25.000Z (about 4 years ago)
- Default Branch: master
- Last Pushed: 2024-10-07T02:02:09.000Z (about 1 month ago)
- Last Synced: 2024-10-16T05:45:19.015Z (22 days ago)
- Topics: flutter-bloc-pattern-rxdart, flutter-bloc-rxdart, flutter-rx, flutter-rxdart, rxdart, rxdart-bloc, rxdart-debug-operator, rxdart-ext, rxdart-extension, rxdart-extensions, rxdart-flutter, rxdart-helper, rxdart-redux
- Language: Dart
- Homepage: https://pub.dev/packages/rxdart_ext
- Size: 473 KB
- Stars: 25
- Watchers: 2
- Forks: 8
- Open Issues: 11
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Funding: .github/FUNDING.yml
- License: LICENSE
- Authors: AUTHORS
Awesome Lists containing this project
README
# rxdart_ext
## Author: [Petrus Nguyễn Thái Học](https://github.com/hoc081098)
[](https://codecov.io/gh/hoc081098/rxdart_ext)
[](https://github.com/hoc081098/rxdart_ext/actions/workflows/dart.yml)
[](https://pub.dev/packages/rxdart_ext)
[](https://hits.seeyoufarm.com)
[](https://opensource.org/licenses/MIT)
[](https://pub.dev/packages/lints)
Some extension methods and classes built on top of [`RxDart`](https://pub.dev/packages/rxdart) - [`RxDart`](https://pub.dev/packages/rxdart) extension.
Liked some of my work? Buy me a coffee (or more likely a beer)
## RxDart and Dart SDK compatibility
| **rxdart_ext** | **rxdart** | **Dart SDK** |
|:---------------:|:----------:|:-----------------:|
| `0.1.2` | `^0.27.2` | `>=2.12.0 <4.0.0` |
| `0.1.3 → 0.2.0` | `^0.27.3` | `>=2.12.0 <4.0.0` |
| `0.2.1 → 0.2.2` | `^0.27.4` | `>=2.12.0 <4.0.0` |
| `0.2.3 → 0.2.9` | `^0.27.5` | `>=2.12.0 <4.0.0` |
| `^0.3.0` | `^0.28.0` | `>=2.12.0 <4.0.0` |
| `^0.4.0` | `^0.28.0` | `^3.0.0` |
**The latest version of `rxdart_ext` always works fine with the latest version of `rxdart`.**
## API - [Documentation](https://pub.dev/documentation/rxdart_ext/latest/)
### 1. [Single](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/Single-class.html)
A Stream which emits single event, either data or error, and then close with a done-event.
```text
Success case: ------------(*)|------
data done
Failure case: ------------(x)|------
error done
```
> NOTE: Single extends Stream, so all operators and transformers for Stream are available for Single as well.
`Single` is suitable for one-shot operations (likes `Future` but **lazy** - executes when listening), eg. making API request, reading local storage, ...
```dart
import 'package:http/http.dart' as http;
Single fetchUser(String id) {
return Single.fromCallable(() => http.get(Uri.parse('$baseUrl/users/$id')))
.flatMapSingle((res) => res.statusCode == HttpStatus.ok
? Single.value(res.body)
: Single.error(Exception('Cannot fetch user with id=$id')))
.map((body) => User.fromJson(jsonEncode(body)));
}
```
- Create Single
- Factory constructors.
- [Single.unsafeFromStream](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/Single/Single.unsafeFromStream.html)
- [Single.value](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/Single/Single.value.html)
- [Single.error](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/Single/Single.error.html)
- [Single.fromFuture](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/Single/Single.fromFuture.html)
- [Single.fromCallable](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/Single/Single.fromCallable.html)
- [Single.timer](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/Single/Single.timer.html)
- [Single.defer](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/Single/Single.defer.html)
- [Single.retry](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/Single/Single.retry.html)
- Static methods provided by [RxSingles]() class
- [RxSingles.zip2](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/RxSingles/zip2.html)
- [RxSingles.forkJoin2](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/RxSingles/forkJoin2.html)
..[RxSingles.forkJoin9](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/RxSingles/forkJoin9.html)
and [RxSingles.forkJoinList](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/RxSingles/forkJoinList.html)
- [RxSingles.using](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/RxSingles/using.html)
- Convert others to Single via extensions.
- [Stream.singleOrError](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/SingleOrErrorStreamExtension/singleOrError.html)
- [Future.asSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/AsSingleFutureExtension/asSingle.html)
- [`(FutureOr Function())`.asSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/AsSingleFunctionExtension/asSingle.html)
- Operators for Single (returns a Single instead of Stream)
- [asNullable](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/AsNullableSingleExtension/asNullable.html)
- [flatMapSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/FlatMapSingleExtension/flatMapSingle.html)
- [flatMapEitherSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/FlatMapEitherSingleExtension/flatMapEitherSingle.html)
- [asyncExpandSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/AsyncExpandSingleExtension/asyncExpandSingle.html)
- [switchMapSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/SwitchMapSingleExtension/switchMapSingle.html)
- [exhaustMapSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/ExhaustMapSingleExtension/exhaustMapSingle.html)
- [debug](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DebugSingleExtension/debug.html)
- [delay](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DelaySingleExtension/delay.html)
- [doOnCancel](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DoSingleExtensions/doOnCancel.html)
- [doOnData](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DoSingleExtensions/doOnData.html)
- [doOnError](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DoSingleExtensions/doOnError.html)
- [doOnListen](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DoSingleExtensions/doOnListen.html)
- [onErrorReturn](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/OnErrorResumeSingleExtensions/onErrorReturn.html)
- [onErrorReturnWith](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/OnErrorResumeSingleExtensions/onErrorReturnWith.html)
- [onErrorResumeSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/OnErrorResumeSingleExtensions/onErrorResumeSingle.html)
- [onErrorResumeNextSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/OnErrorResumeSingleExtensions/onErrorResumeNextSingle.html)
- [mapTo](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/MapToSingleExtension/mapTo.html)
- [toEitherSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/ToEitherSingleExtension/toEitherSingle.html)
- [asVoid](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/AsVoidSingleExtension/asVoid.html)
### 2. Operators for Stream
- [asNullable](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/AsNullableStreamExtension/asNullable.html)
- [debug](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DebugStreamExtension/debug.html), [collect](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/CollectStreamExtension/collect.html)
- [distinctUniqueBy](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DistinctUniqueByStreamExtension/distinctUniqueBy.html)
- [distinctBy](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DistinctByExtension/distinctBy.html)
- [doOn](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DoOnStreamExtensions/doOn.html)
- [doneOnError](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/DoneOnErrorStreamExtension/doneOnError.html)
- [flatMapBatches](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/FlatMapBatchesStreamExtension/flatMapBatches.html)
- [flatMapBatchesSingle](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/FlatMapBatchesStreamExtension/flatMapBatchesSingle.html)
- [ignoreErrors](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/IgnoreErrorsStreamExtension/ignoreErrors.html)
- `mapNotNull` (moved to `rxdart 0.27.4` as standard operator: [mapNotNull](https://pub.dev/documentation/rxdart/latest/rx/MapNotNullExtension/mapNotNull.html))
- [toSingleSubscription](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/ToSingleSubscriptionStreamExtension/toSingleSubscriptionStream.html)
- [asVoid](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/AsVoidStreamExtension/asVoid.html)
- `whereNotNull` (moved to `rxdart 0.27.4` as standard operator: [whereNotNull](https://pub.dev/documentation/rxdart/latest/rx/WhereNotNullExtension/whereNotNull.html))
### 3. [StateStream](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/StateStream-class.html)
A Stream that provides synchronous access to the last emitted item,
and two consecutive values are not equal.
The equality between previous data event and current data event is determined by [StateStream.equals](<(https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/StateStream/equals.html)>).
This Stream always has no error.
- Broadcast
- [StateSubject](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/StateSubject-class.html)
- [StateConnectableStream](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/StateConnectableStream-class.html)
- [publishState](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/StateConnectableExtensions/publishState.html)
- [shareState](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/StateConnectableExtensions/shareState.html)
- Single-subscription
- [toStateStream](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/ToStateStreamExtension/toStateStream.html)
#### Example
Useful for `Flutter BLoC pattern` - `StreamBuilder`, expose broadcast state stream to UI, can synchronous access to the last emitted item, and distinct until changed
- [x] `Distinct`: distinct until changed.
- [x] `Value`: can synchronous access to the last emitted item.
- [x] `NotReplay`: not replay the latest value.
- [x] `Connectable`: broadcast stream - can be listened to multiple time.
```
Stream (dart:core)
^
|
|
|--------------------------------------------|
| |
| |
ValueStream (rxdart) |
^ |
| |
| |
NotReplayValueStream (rxdart_ext) |
^ ConnectableStream (rxdart)
| ^
| |
StateStream (rxdart_ext) |
^ |
| |
|------------ -----------|
| |
| |
StateConnectableStream (rxdart_ext)
```
```dart
class UiState { ... }
final Stream state$ = ...;
final StateConnectableStream state$ = state$.publishState(UiState.initial());
final connection = state$.connect();
StreamBuilder(
initialData: state$.value,
stream: state$,
builder: (context, snapshot) {
final UiState state = snapshot.requireData;
return ...;
},
);
```
See also [flutter_bloc_pattern/RxStreamBuilder](https://pub.dev/documentation/flutter_bloc_pattern/latest/flutter_bloc_pattern/RxStreamBuilder-class.html),
it can be used with `StateStream` perfectly and more easily (don't require `initialData` and don't need to call `snapshot.requireData`).
```dart
final StateStream state$;
RxStreamBuilder(
stream: state$,
builder: (context, UiState state) {
// use state directly
return ...;
}
);
```
### 4. [NotReplayValueStream](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/NotReplayValueStream-class.html)
A Stream that provides synchronous access to the last emitted item, but not replay the latest value.
- Broadcast
- [ValueSubject](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/ValueSubject-class.html)
- [NotReplayValueConnectableStream](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/NotReplayValueConnectableStream-class.html)
- [publishValueNotReplay](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/ValueConnectableNotReplayStreamExtensions/publishValueNotReplay.html)
- [shareValueNotReplay](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/ValueConnectableNotReplayStreamExtensions/shareValueNotReplay.html)
- Single-subscription
- [ValueStreamController](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/ValueStreamController-class.html)
- [toNotReplayValueStream](https://pub.dev/documentation/rxdart_ext/latest/rxdart_ext/ToNotReplayValueStreamExtension/toNotReplayValueStream.html)
### 5. Utils
#### DisposableMixin
A mixin that makes it easy to dispose streams without having to store and close a `StreamSubscription` variable.
Typical usage is as follows:
```dart
class DisposableExample with DisposableMixin {
DisposableExample({
required Stream dateTimeStream,
}) {
dateTimeStream.takeUntil(dispose$).listen(
(value) => print('Disposable example: $value'),
);
}
}
```
## License
MIT License
Copyright (c) 2020-2022 Petrus Nguyễn Thái Học
