gistfile1.txt

actor TaskActor<T> {
    private var cachedTask: Task<T, Error>?

    func run(_ operation: @escaping @Sendable () async throws -> T) async throws -> T {
        if cachedTask == nil {
            cachedTask = Task {
                try await operation()
            }
        }

        defer { cachedTask = nil }

        return try await cachedTask!.value
    }
}