Files
cherrypick/cherrypick_annotations/lib/src/singleton.dart
Sergey Penkovsky 884df50a34 docs(annotations): unify and improve English DartDoc for all DI annotations
- Updated all annotation files with complete English DartDoc, field/class/method usage, practical code samples
- Unified documentation style for @inject, @injectable, @instance, @singleton, @named, @scope, @params, @provide, @module
- Removed Russian comments for clarity and consistency
- Improved discoverability and IDE/autocomplete experience for CherryPick DI users
- No functional or API changes; documentation/dev experience only
2025-08-12 16:18:53 +03:00

43 lines
1.5 KiB
Dart

//
// Copyright 2021 Sergey Penkovsky (sergey.penkovsky@gmail.com)
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// https://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
import 'package:meta/meta.dart';
/// Marks a provider method or class so its instance is created only once and shared (singleton) for DI in CherryPick.
///
/// Use `@singleton()` on provider methods or classes in your DI module to ensure only one instance is ever created
/// and reused across the application's lifetime (or scope lifetime).
///
/// Example:
/// ```dart
/// import 'package:cherrypick_annotations/cherrypick_annotations.dart';
///
/// @module()
/// abstract class AppModule {
/// @singleton()
/// ApiClient createApi() => ApiClient();
/// }
/// ```
///
/// The generated code will ensure:
/// ```dart
/// bind<ApiClient>().toProvide(() => createApi()).singleton();
/// ```
///
/// See also: [@instance], [@provide], [@named]
@experimental
final class singleton {
/// Creates a [singleton] annotation for DI providers/classes.
const singleton();
}