> For the complete documentation index, see [llms.txt](https://3440217568.gitbook.io/rxswift/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://3440217568.gitbook.io/rxswift/decision_tree/debug.md).

# debug

**打印所有的订阅，事件以及销毁信息**

## 演示

```swift
let disposeBag = DisposeBag()

let sequence = Observable<String>.create { observer in
    observer.onNext("🍎")
    observer.onNext("🍐")
    observer.onCompleted()
    return Disposables.create()
}

sequence
    .debug("Fruit")
    .subscribe()
    .disposed(by: disposeBag)
```

**输出结果：**

```swift
2017-11-06 20:49:43.187: Fruit -> subscribed
2017-11-06 20:49:43.188: Fruit -> Event next(🍎)
2017-11-06 20:49:43.188: Fruit -> Event next(🍐)
2017-11-06 20:49:43.188: Fruit -> Event completed
2017-11-06 20:49:43.189: Fruit -> isDisposed
```