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Implement Python liked any function in the type system. A type takes the Array and returns true if any element of the Array is true. If the Array is e 阅读全文
posted @ 2022-09-28 01:39
Zhentiw
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microtask -> requestAnimationFrame -> macrotask Each scheduler can just take callback as arguement asyncScheduler.schedule(() => console.log('async')) 阅读全文
posted @ 2022-09-27 21:41
Zhentiw
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Get an Object that is the difference between O & O1 /* _____________ Your Code Here _____________ */ type Diff<T, S> = { [K in Exclude<(keyof T | keyo 阅读全文
posted @ 2022-09-27 01:47
Zhentiw
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const fruitCounts = { apple: 12, banana: 23 } type PropUnion<T extends Record<PropertyKey, any>> = { [K in keyof T]: { [K2 in K]: T[K2] } }[keyof T] t 阅读全文
posted @ 2022-09-26 13:53
Zhentiw
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ShareReplay is using ReplaySubject. It will reply the messages to later subscribers. It turns unicast observable to multicase observable. shareReplay( 阅读全文
posted @ 2022-09-26 13:29
Zhentiw
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Store.js import { BehaviorSubject, Subject } from 'rxjs'; import { map, distinctUntilKeyChanged, scan } from 'rxjs/operators'; export class Observable 阅读全文
posted @ 2022-09-26 13:19
Zhentiw
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Replace the camelCase or PascalCase string with kebab-case. FooBarBaz -> foo-bar-baz For example type FooBarBaz = KebabCase<"FooBarBaz">; const foobar 阅读全文
posted @ 2022-09-26 03:02
Zhentiw
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Merge two types into a new type. Keys of the second type overrides keys of the first type. For example type foo = { name: string; age: string; } type 阅读全文
posted @ 2022-09-25 03:12
Zhentiw
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Implement the String to Union type. Type take string argument. The output should be a union of input letters For example type Test = '123'; type Resul 阅读全文
posted @ 2022-09-16 16:25
Zhentiw
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Implement the Absolute type. A type that take string, number or bigint. The output should be a positive number string For example type Test = -100; ty 阅读全文
posted @ 2022-09-16 16:18
Zhentiw
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