我如何使用`do`作为RxJS可调运算符？ [英] How would I use `do` as an RxJS lettable operator?

问题描述

RxJS 5.5允许抓取lettable运算符并像这样管道：

RxJS 5.5 allows grabbing lettable operators and piping them like so:

import { ajax } from 'rxjs/observable/dom/ajax'
import { catchError, map, retry } from 'rxjs/operators'

ajax.getJSON('https://example.com/api/test')
.pipe(
    retry(3, 1000),
    map(fetchUserFulfilled),
    catchError(console.error)
)

我如何在这些命令之间使用 do 运算符？

How would I use the do operator between these commands?

推荐答案

do 运算符在RxJS 5.5中重命名为 tap 因为它与JavaScript 执行关键字相撞。

The do operator was renamed in RxJS 5.5 to tap because it collided with the JavaScript do keyword.

有关详细信息，请参阅： https://github.com/ReactiveX/rxjs/blob/master /doc/pipeable-operators.md#pipeable-operators

For more info see: https://github.com/ReactiveX/rxjs/blob/master/doc/pipeable-operators.md#pipeable-operators

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