master
master
```ts type Shift = T extends [infer A, ...infer B] ? B : never; // 你的实现代码 // 测试用例 type S0 = Shift; type S1 = Shift; ```
```ts type Includes = E extends T[number] ? true : false; // 你的实现代码 type I0 = Includes; // false type I1 = Includes; // true type I2 = Includes; //...
```ts type Tail = T extends [infer A, ...infer B] ? B : []; // 你的实现代码 // 测试用例 type T0 = Tail; // [] type T1 = Tail; // [2]...
```ts type Unshift = [E, ...T]; // 你的实现代码 // 测试用例 type Arr0 = Unshift; // [1] type Arr1 = Unshift; // [0, 1, 2, 3] ```
```ts interface Example { a: string; b: string | number; c: () => void; d: {}; } type ConditionalPick = { [K in keyof T as (T[K] extends R ?...
```ts type Fn = (a: number, b: string) => number; type AppendArgument = F extends (...args: any) => any ? (x: A, ...arg: Parameters) => ReturnType : never; // 你的实现代码...
```ts type Fn = (a: number, b: string) => number; type AppendArgument = F extends (...args: any) => any ? (x: A, ...arg: Parameters) => ReturnType : never; // 你的实现代码...
```ts type Head = T extends [infer A, ...infer B] ? A : never; // 你的实现代码 // 测试用例 type H0 = Head; // never type H1 = Head; // 1...
```ts type Trim = V extends ` ${infer R} ` ? R : V; // 你的实现代码 // 测试用例 type R = Trim ```