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The useDebugValue hook will not effect your user experience but is instead aimed at improving the developer experience. When building your own custom 阅读全文
posted @ 2020-10-08 02:19
Zhentiw
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function reverse(str: string): string; function reverse<T>(arr: T[]): T[]; function reverse<T>(stringOrArray: string | T[]): string | T[] { if (typeof 阅读全文
posted @ 2020-10-06 18:20
Zhentiw
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class Pizza { constructor(private name: string, private price: number) {} } class List<T> { private list: T[]; addItem(item: T): void { this.list.push 阅读全文
posted @ 2020-10-06 18:14
Zhentiw
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Discriminated (Tagged) Unions means that for two or more similar types, we have one common prop which can differentiate individual. interface Order { 阅读全文
posted @ 2020-10-06 15:27
Zhentiw
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interface Order { id: string; amount: number; currency: string; } interface Stripe { card: string; cvc: string; } interface PayPal { email: string; } 阅读全文
posted @ 2020-10-06 15:18
Zhentiw
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When we use class extend in typescript: // app.ts export default class App {} // bar.ts export defulat class Bar extends App { } After compiling, we w 阅读全文
posted @ 2020-10-05 18:29
Zhentiw
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tsconfig.json: { "compilerOptions": { "target": "es5", "lib": ["es6", "dom"], "module": "commonjs", "outDir": "dist", "noUnusedLocals": true, "noUnuse 阅读全文
posted @ 2020-10-05 18:11
Zhentiw
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Sometime if our tsconfig.json looks like this; { "compilerOptions": { "target": "es5", "module": "commonjs", "outDir": "dist" } } We can get all kinds 阅读全文
posted @ 2020-10-05 17:46
Zhentiw
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tsconfig-base.json: { "compilerOptions": { "target": "es5", "module": "commonjs", "lib": ["dom", "es6"], "outDir": "dist", "noImplicitAny": false } } 阅读全文
posted @ 2020-10-05 03:03
Zhentiw
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class Song { constructor(public title: string, public duration: number) { } } class Playlist { constructor(public name: string, public songs: Song[]) 阅读全文
posted @ 2020-10-04 01:22
Zhentiw
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