Zhentiw - 博客园

2022年9月2日

[Typescript Challenges] 4. Easy - First of Array

摘要： Implement a generic First<T> that takes an Array T and returns it's first element's type. type arr1 = ['a', 'b', 'c'] type arr2 = [3, 2, 1] type head1 阅读全文

posted @ 2022-09-02 01:30 Zhentiw 阅读(18) 评论(0) 推荐(0) 编辑

[Node.js] uncaughtExpection

摘要： If you cannot catch those pesky errors for any reason. Maybe some lib is throwing them and you can't catch them. You can use: process.on('uncaughtExce 阅读全文

posted @ 2022-09-02 01:26 Zhentiw 阅读(10) 评论(0) 推荐(0) 编辑

2022年8月31日

[Typescript Challenges] 3. Easy - Tuple to Object

摘要： For example: const tuple = ['tesla', 'model 3', 'model X', 'model Y'] as const type result = TupleToObject<typeof tuple> // expected { tesla: 'tesla', 阅读全文

posted @ 2022-08-31 15:51 Zhentiw 阅读(29) 评论(0) 推荐(0) 编辑

[Typescript Challenges] 2. Easy -- readonly

摘要： For example: interface Todo { title: string description: string } const todo: MyReadonly<Todo> = { title: "Hey", description: "foobar" } todo.title = 阅读全文

posted @ 2022-08-31 15:26 Zhentiw 阅读(26) 评论(0) 推荐(0) 编辑

[Typescript Challenges] 1. Easy - Pick

摘要： For example: interface Todo { title: string description: string completed: boolean } type TodoPreview = MyPick<Todo, 'title' | 'completed'> const todo 阅读全文

posted @ 2022-08-31 15:23 Zhentiw 阅读(32) 评论(0) 推荐(0) 编辑

[Pattern] Flyweight

摘要： Reuse existing instances when working with identical objects The flyweight pattern is useful when you're creating a huge number of objects, which coul 阅读全文

posted @ 2022-08-31 14:59 Zhentiw 阅读(15) 评论(0) 推荐(0) 编辑

2022年8月30日

[Algorithm] Three Number Sort

摘要： You're given an array of integers and another array of three distinct integers. The first array is guaranteed to only contain integers that are in the 阅读全文

posted @ 2022-08-30 20:55 Zhentiw 阅读(17) 评论(0) 推荐(0) 编辑

[Typescript] Step 7. Tests for Types

摘要： Step 7: Tests for Types The assertion type code need to be tested just as the normal code. export function isITeam(arg: any): arg is ITeam { /** * { i 阅读全文

posted @ 2022-08-30 18:09 Zhentiw 阅读(34) 评论(0) 推荐(0) 编辑

[Typescript] Convert a js project to typescript

摘要： Step1 & 2 for converting a js app to ts Step 3. Turn on "noImplicitAny" and even more strict mode Step 4. ESLint for Typescript Step5. Local types ove 阅读全文

posted @ 2022-08-30 18:09 Zhentiw 阅读(19) 评论(0) 推荐(0) 编辑

[Typescript] Step6: Types at Runtime

摘要： Step 5: Types at Runtime This problem often happens when APi return the data. let cachedAllTeamsList: Promise<ITeam[]>; export async function getAllTe 阅读全文

posted @ 2022-08-30 15:32 Zhentiw 阅读(21) 评论(0) 推荐(0) 编辑

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