2022年10月22日
[RxJS] Append values to a stream using startWith and endWith (countdown$)
摘要： // begin lesson code import { interval, fromEvent, of } from 'rxjs'; import { scan, mapTo, takeWhile, takeUntil, tap, startWith, endWith } from 'rxjs/ 阅读全文
posted @ 2022-10-22 16:43 Zhentiw 阅读(28) 评论(0) 推荐(0)
[RxJS] Use filter and partition for conditional logic
摘要： // begin lesson code import { fromEvent, partition } from 'rxjs'; import { filter, pluck } from 'rxjs/operators'; const MOVE_SPEED = 20; let leftPosit 阅读全文
posted @ 2022-10-22 16:31 Zhentiw 阅读(52) 评论(0) 推荐(0)
[RxJS] Automate unsubscribe process with takeUntil
摘要： const onDestroy$ = new Subject(); fromEvent(document, 'click').pipe( map((event: any) => ({ x: event.clientX, y: event.clientY })), takeUntil(onDestro 阅读全文
posted @ 2022-10-22 16:20 Zhentiw 阅读(28) 评论(0) 推荐(0)
[RxJS] Extract common operator logic into standalone function
摘要： /* * From */ click$.pipe( mergeMapTo(throwError({ status: 400, message: 'Server error' }).pipe( retryWhen(attempts => { return attempts.pipe( mergeMap 阅读全文
posted @ 2022-10-22 16:13 Zhentiw 阅读(21) 评论(0) 推荐(0)
[Typescript] Tips: Use assertion functions inside classes
摘要： You can do some really, really neat stuff with assertion functions inside classes. Here, we assert that the user is logged in and get proper inference 阅读全文
posted @ 2022-10-22 02:23 Zhentiw 阅读(29) 评论(0) 推荐(0)