メニュー
Add the NonReentrant mixin to prevent an action from dispatching while already in progress. Covers preventing duplicate form submissions, avoiding race conditions, and protecting long-running operations.
デフォルトでは、最初にソースを確認する Prompt が選択されています。直接コマンドに切り替えるか、ローカルコピーをダウンロードすることもできます。
インストールを決める前に、SKILL.md と SkillsMP に表示されている付属ファイルをお読みください。
SOC 職業分類に基づく
Codex または Claude でインストール この Prompt をコピーして Codex、Claude、または他のアシスタントに貼り付けると、Skill ページを確認してインストールできます。
直接コマンドでは確認用 Prompt が省略されます。実行前にソースを確認してください。
npx skills add https://github.com/marcglasberg/async_redux --skill asyncredux-nonreentrant-mixinコマンドは1行のまま表示されます。コピー前に横へスクロールして全体を確認してください。
ローカルで確認しますか？SkillsMP が現在取得できるファイルをダウンロードできます。
SKILL.md を表示中
Inject dependencies into actions using the environment, dependencies, and configuration pattern. Covers creating an Environment enum, a Dependencies class, passing them to the Store, accessing them from actions and widgets, and using dependency injection for testability.
Create a custom base action class for your app. Covers adding getter shortcuts to state parts, adding selector methods, implementing shared wrapError logic, and establishing project-wide action conventions.
Initialize, setup and configure AsyncRedux in a Flutter app. Use it whenever starting a new AsyncRedux project, or when the user requests.
| name | asyncredux-nonreentrant-mixin |
| description | Add the NonReentrant mixin to prevent an action from dispatching while already in progress. Covers preventing duplicate form submissions, avoiding race conditions, and protecting long-running operations. |
The NonReentrant mixin prevents concurrent execution of the same action type. When an action instance is already running, new dispatches of that same action are silently aborted.
Add the NonReentrant mixin to any action that should not run concurrently:
class SaveAction extends AppAction with NonReentrant {
Future<AppState?> reduce() async {
await http.put('http://myapi.com/save', body: 'data');
return null;
}
}
With this mixin:
The NonReentrant mixin overrides the abortDispatch method. When abortDispatch() returns true, the action's before(), reduce(), and after() methods will not run, and the state stays unchanged.
By default, checks are based on the action's runtime type - multiple instances of the same action class cannot run simultaneously.
Override nonReentrantKeyParams() to allow actions with different parameters to run in parallel:
class SaveItemAction extends AppAction with NonReentrant {
final String itemId;
SaveItemAction(this.itemId);
@override
Object? nonReentrantKeyParams() => itemId;
Future<AppState?> reduce() async {
await saveItem(itemId);
return null;
}
}
With this customization:
SaveItemAction('A') and SaveItemAction('B') can run concurrentlySaveItemAction('A') dispatches will still block each otherOverride computeNonReentrantKey() to make different action classes block each other:
class SaveUserAction extends AppAction with NonReentrant {
final String orderId;
SaveUserAction(this.orderId);
@override
Object? computeNonReentrantKey() => orderId;
Future<AppState?> reduce() async { ... }
}
class DeleteUserAction extends AppAction with NonReentrant {
final String orderId;
DeleteUserAction(this.orderId);
@override
Object? computeNonReentrantKey() => orderId;
Future<AppState?> reduce() async { ... }
}
This prevents SaveUserAction('123') and DeleteUserAction('123') from running simultaneously - useful when different operations on the same resource must not overlap.
You can combine NonReentrant with other compatible mixins:
class LoadDataAction extends AppAction with CheckInternet, NonReentrant {
Future<AppState?> reduce() async {
final data = await fetchData();
return state.copy(data: data);
}
}
Incompatible mixins: NonReentrant cannot be combined with:
ThrottleUnlimitedRetryCheckInternetURLs from the documentation: