[2주차] Easy 풀이

[sbyeol3]

[Choozii]

4.Pick

type MyPick<T, K extends keyof T> = {
//첫번째 인자의 key값들만 접근할 수 있도록 함
[P in K] : T[P]
}

[Choozii]

7. ReadOnly

type MyReadonly = {
readonly [key in keyof T] : T[key]
}

[Choozii]

11. Tuple to Object

type TupleToObject<T extends readonly any[]> = {
[K in T[number]] : K
}

[Choozii]

14. First of Array

type First<T extends any[]> = T extends []? never : T[0]

[Choozii]

18. Length of Tuple

type Length<T extends readonly unknown[]> = T["length"]

[Choozii]

43. Exclude

[Choozii]

189. Awaited

[Choozii]

268. If

type If<C, T, F> = C extends true?T:F

[Choozii]

533. Concat

type Concat<T extends any [], U extends any []> = [...T, ...U]

[Choozii]

898. Includes

type Includes<T extends readonly any[], U> =
T extends [infer F, ...infer R]? Equal<F, U> extends true? true : Includes<R, U> : false;

[Choozii]

3057. Push

type Push<T extends any [], U> = [...T, U]

[Choozii]

3060. Unshift

type Unshift<T extends any [], U> = [U, ...T]

[Choozii]

3312. Parameters

type MyParameters<T extends (...args: any[]) => any> = T extends (...args: infer A) => any? A : never;