Zhentiw - 博客园

2022年10月14日

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(42) 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(41) 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(43) 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(94) 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(61) 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(44) 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(47) 评论(0) 推荐(0)

[Unit testing RxJS] Test hot observables with marbles

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

posted @ 2022-10-13 20:24 Zhentiw 阅读(38) 评论(0) 推荐(0)

[Unit testing Rxjs] Confirm subscription points with marble testing (expectSubscriptions)

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

posted @ 2022-10-13 20:09 Zhentiw 阅读(46) 评论(0) 推荐(0)

[Typescript] Get class properties type in union

摘要： For example there is a clas: export class ModifierState { /** * Returns the modifier state applicable to the keyboard event given. * @param event The 阅读全文

posted @ 2022-10-13 18:13 Zhentiw 阅读(55) 评论(0) 推荐(0)

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