> 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/takelast.md).

# takeLast

**仅仅从 `Observable` 中发出尾部 n 个元素**

![](/files/-MWlwRLbN4k64ztLaiVc)

通过 **takeLast** 操作符你可以只发出尾部 **n** 个元素。并且忽略掉前面的元素。

## 演示

```swift
let disposeBag = DisposeBag()

Observable.of("🐱", "🐰", "🐶", "🐸", "🐷", "🐵")
    .takeLast(3)
    .subscribe(onNext: { print($0) })
    .disposed(by: disposeBag)
```

**输出结果：**

```swift
🐸
🐷
🐵
```