Zhentiw - 博客园

2022年7月12日

摘要： type Statistics = { [K in `${"median" | "mean"}Value`]?: number } Mappiing a sub type: // let winFns: "setInterval" | "setTimeout" type winFns = Extra 阅读全文

posted @ 2022-07-12 14:53 Zhentiw 阅读(49) 评论(0) 推荐(0)

[TypeScript] Thrown values as unknown V4

摘要： Main idea is enforce you to do type checking in catch block, because if you want to get Error stacktrace, the throw value should be an Error type, if 阅读全文

posted @ 2022-07-12 14:09 Zhentiw 阅读(48) 评论(0) 推荐(0)

[TypeScript] Class Property Inference from Constructors V4

摘要： This major convenience feature reduces the need for class field type annotations by inferring their types from assignments in the constructor. It’s im 阅读全文

posted @ 2022-07-12 14:04 Zhentiw 阅读(42) 评论(0) 推荐(0)

2022年7月11日

[TypeScript] Variadic Tuple Types V4 ...T

摘要： https://www.typescript-training.com/course/making-typescript-stick/03-recent-updates-to-typescript/#variadic-tuple-types Before V4, for type, it is po 阅读全文

posted @ 2022-07-11 16:03 Zhentiw 阅读(62) 评论(0) 推荐(0)

2022年7月10日

[Javascript] Swap array item in place using splice()

摘要： function swap(array, i, j) { const [item] = array.splice(i, 1) // get item and remove this item from array array.splice(j, 0, item) } 阅读全文

posted @ 2022-07-10 21:14 Zhentiw 阅读(36) 评论(0) 推荐(0)

2022年7月8日

[Typescript] Difference between return a variable or Object directly

摘要： export interface TwitterResolverContext { db: Db; dbTweetCache: Record<string, DbTweet>; dbUserCache: Record<string, DbUser>; dbTweetToFavoriteCountMa 阅读全文

posted @ 2022-07-08 15:56 Zhentiw 阅读(39) 评论(0) 推荐(0)

2022年7月5日

[Algorithm] BST Construction

摘要： Write a BST class for a Binary Search Tree. The class should support: Inserting values with the insert method. Removing values with the remove method; 阅读全文

posted @ 2022-07-05 14:45 Zhentiw 阅读(30) 评论(0) 推荐(0)

2022年6月24日

[HTML 5] Page Visibility API

摘要： const initPageVisibility = () => { setInterval(() => console.log(document.visibilityState), 1000) } if ('visibilityState' in document) { initPageVisib 阅读全文

posted @ 2022-06-24 19:15 Zhentiw 阅读(48) 评论(0) 推荐(0)

2022年6月23日

[Typescript] Awaited Type

摘要： https://www.typescriptlang.org/docs/handbook/release-notes/typescript-4-5.html post.server.ts: export type Post = { slug: string; title: string; }; ex 阅读全文

posted @ 2022-06-23 14:32 Zhentiw 阅读(311) 评论(0) 推荐(0)

2022年6月22日

[Angular 14] Providers in Angular Route

摘要： { path: 'admin', // load standalone component loadComponent: () => import('./feature/admin/admin.component').then(c => c.AdminComponent), // Swap User 阅读全文

posted @ 2022-06-22 13:56 Zhentiw 阅读(43) 评论(0) 推荐(0)

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