gistfile1.txt

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

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

        defer { cachedTask = nil }

        try await cachedTask!.value
    }
}