cb308bbf68
- Flutter frontend with Provider state management - FastAPI backend with SQLAlchemy ORM - Internationalization support (EN/DE) - Clean Architecture folder structure - GoRouter for navigation - GetIt for dependency injection
37 lines
772 B
Dart
37 lines
772 B
Dart
import 'failures.dart';
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sealed class Result<T> {
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const Result();
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bool get isSuccess => this is Success<T>;
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bool get isFailure => this is Failure;
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T? get data => this is Success<T> ? (this as Success<T>).data : null;
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Failure? get failure => this is Error<T> ? (this as Error<T>).failure : null;
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R when<R>({
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required R Function(T data) success,
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required R Function(Failure failure) error,
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}) {
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if (this is Success<T>) {
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return success((this as Success<T>).data);
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} else {
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return error((this as Error<T>).failure);
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}
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}
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}
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class Success<T> extends Result<T> {
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@override
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final T data;
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const Success(this.data);
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}
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class Error<T> extends Result<T> {
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@override
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final Failure failure;
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const Error(this.failure);
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}
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