IsAlphabet
约 81 字小于 1 分钟
2026-02-11
题目
Determine if the given letter is an alphabet.
解题思路
待补充
答案
type IsAlphabet<S extends string> = any验证
import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<IsAlphabet<'A'>, true>>,
Expect<Equal<IsAlphabet<'z'>, true>>,
Expect<Equal<IsAlphabet<'9'>, false>>,
Expect<Equal<IsAlphabet<'!'>, false>>,
Expect<Equal<IsAlphabet<'😂'>, false>>,
Expect<Equal<IsAlphabet<''>, false>>,
]参考
无
