随笔列表第87页 - Zhentiw

2022年12月11日

[Typescript] Extracting Members of a Discriminated union - Extract<T, U>

摘要： Give a discriminated union: export type Event = | { type: "click"; event: MouseEvent; } | { type: "focus"; event: FocusEvent; } | { type: "keydown"; e 阅读全文

posted @ 2022-12-11 20:11 Zhentiw 阅读(29) 评论(0) 推荐(0)

[Typescript] 132. Medium - Filter

摘要： Implement the type Filter<T, Predicate> takes an Array T, primitive type or union primitive type Predicate and returns an Array include the elements o 阅读全文

posted @ 2022-12-11 17:26 Zhentiw 阅读(16) 评论(0) 推荐(0)

[Typescript] 133. Medium - All

摘要： Returns true if all elements of the list are equal to the second parameter passed in, false if there are any mismatches. For example type Test1 = [1, 阅读全文

posted @ 2022-12-11 00:03 Zhentiw 阅读(18) 评论(0) 推荐(0)

2022年12月9日

[React] useImperativeHandle, similar to Angular Directive `exportAs`

摘要： Imagine you make a super fancy input component as part of your design system. Imagine that a parent element (i.e. the component that renders the fancy 阅读全文

posted @ 2022-12-09 21:54 Zhentiw 阅读(34) 评论(0) 推荐(0)

[React 18] useId

摘要： A new hook for version 18 of React is useId. Frequently in React you need unique identifiers to associate two objects together. An example of this wou 阅读全文

posted @ 2022-12-09 21:50 Zhentiw 阅读(102) 评论(0) 推荐(0)

[React] useLayoutEffect

摘要： useLayoutEffect is almost the same as useEffect except that it's synchronous to render as opposed to scheduled like useEffect is. If you're migrating 阅读全文

posted @ 2022-12-09 21:47 Zhentiw 阅读(33) 评论(0) 推荐(0)

2022年12月8日

[Typescript] 131. Extreme - Query String Parser

摘要： You're required to implement a type-level parser to parse URL query string into a object literal type. Some detailed requirements: Value of a key in q 阅读全文

posted @ 2022-12-08 22:21 Zhentiw 阅读(33) 评论(0) 推荐(0)

[Algorithom] Valid IP address

摘要： function validIPAddresses(string) { const res= [] for (let i = 1; i < Math.min(string.length, 4); i++) { const parts = ['', '', '', ''] parts[0] = str 阅读全文

posted @ 2022-12-08 01:15 Zhentiw 阅读(21) 评论(0) 推荐(0)

2022年12月7日

[Typescript] 130. Hard - Replace Union

摘要： Given an union of types and array of type pairs to replace ([[string, number], [Date, null]]), return a new union replaced with the type pairs. /* ___ 阅读全文

posted @ 2022-12-07 20:12 Zhentiw 阅读(22) 评论(0) 推荐(0)

2022年12月6日

[Typescript] 129. Hard - Capitalize Nest Object Keys

摘要： Capitalize the key of the object, and if the value is an array, iterate through the objects in the array. /* _____________ Your Code Here ____________ 阅读全文

posted @ 2022-12-06 21:24 Zhentiw 阅读(25) 评论(0) 推荐(0)

Answer1215

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