> 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/repeatelement.md).

# repeatElement

**创建重复发出某个元素的 `Observable`**

![](/files/-MWlwJGkjzdoPHooX_8F)

**repeatElement** 操作符将创建一个 `Observable`，这个 `Observable` 将无止尽地发出同一个元素。

## 演示

创建重复发出 0 的 `Observable`

```swift
let id = Observable.repeatElement(0)
```

它相当于：

```swift
let id = Observable<Int>.create { observer in
    observer.onNext(0)
    observer.onNext(0)
    observer.onNext(0)
    observer.onNext(0)
    ... // 无数次
    return Disposables.create()
}
```