목록2024/03/10 (1)

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[타입챌린지 - EASY] 14 - First of Array

문제 https://github.com/type-challenges/type-challenges/blob/main/questions/00014-easy-first/README.md type arr1 = ['a', 'b', 'c'] type arr2 = [3, 2, 1] type head1 = First // expected to be 'a' type head2 = First // expected to be 3 Expect, Expect 123>>, Expect, Expect, 풀이 // S1 type First = T extends [] ? never : T[0]; // S2 type First = T["length"] extends 0 ? never : T[0]; // S3 type First = T ..
Type Challenge 2024. 3. 10. 17:36
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