Zhentiw - 博客园

2022年10月14日

摘要： Implement a generic PartialByKeys<T, K> which takes two type argument T and K. K specify the set of properties of T that should set to be optional. Wh 阅读全文

posted @ 2022-10-14 19:04 Zhentiw 阅读(29) 评论(0) 推荐(0)

[HTML 5] Async clioboard

摘要： https://developer.mozilla.org/en-US/docs/Web/API/Clipboard_API const app = document.getElementById('app'); app.innerHTML = ` <h1>JavaScript HTML5 APIs 阅读全文

posted @ 2022-10-14 16:03 Zhentiw 阅读(28) 评论(0) 推荐(0)

[Typescript] 48. Medium - EndsWith

摘要： Implement EndsWith<T, U> which takes two exact string types and returns whether T ends with U For example: type a = EndsWith<'abc', 'bc'> // expected 阅读全文

posted @ 2022-10-14 01:40 Zhentiw 阅读(30) 评论(0) 推荐(0)

[Typescript] 47. Medium- StartsWith

摘要： Implement StartsWith<T, U> which takes two exact string types and returns whether T starts with U For example type a = StartsWith<'abc', 'ac'> // expe 阅读全文

posted @ 2022-10-14 01:38 Zhentiw 阅读(31) 评论(0) 推荐(0)

[Typescript] 46. Medium - PickByType

摘要： From T, pick a set of properties whose type are assignable to U. For Example type OnlyBoolean = PickByType<{ name: string count: number isReadonly: bo 阅读全文

posted @ 2022-10-14 01:31 Zhentiw 阅读(22) 评论(0) 推荐(0)

2022年10月13日

[Typescript] Abstract Classes

摘要： You cannot create a instance of abstract class. An abstract class mean to be extended. abstract class Size { constructor(public sizes: string[]) {} se 阅读全文

posted @ 2022-10-13 22:20 Zhentiw 阅读(28) 评论(0) 推荐(0)

[RxJS] AuditTime & throttleTime

摘要： auditTime: import { fromEvent } from 'rxjs'; import { auditTime, map } from 'rxjs/operators'; const click$ = fromEvent(document, 'click'); click$ .pip 阅读全文

posted @ 2022-10-13 22:00 Zhentiw 阅读(81) 评论(0) 推荐(0)

[RxJS] SampleTime & Sample

摘要： SampleTime If there is no value emiited between sample time and previous emited value, ouput won't have anything. import { fromEvent, interval } from 阅读全文

posted @ 2022-10-13 21:54 Zhentiw 阅读(38) 评论(0) 推荐(0)

[Unit testing RxJS] Test asynchronous operations with marbles

摘要： const { TestScheduler } = require("rxjs/testing"); const { map, take, delay } = require("rxjs/operators"); const { concat, from } = require("rxjs"); d 阅读全文

posted @ 2022-10-13 20:39 Zhentiw 阅读(25) 评论(0) 推荐(0)

[Unit testing RxJS] Test synchronous operations

摘要： const { TestScheduler } = require("rxjs/testing"); const { map, take } = require("rxjs/operators"); const { concat, from } = require("rxjs"); describe 阅读全文

posted @ 2022-10-13 20:31 Zhentiw 阅读(30) 评论(0) 推荐(0)

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