Replace
约 131 字小于 1 分钟
2026-02-11
题目
实现 Replace<S, From, To> 将字符串 S 中的第一个子字符串 From 替换为 To 。
例如
type replaced = Replace<'types are fun!', 'fun', 'awesome'> // 期望是 'types are awesome!'解题思路
待补充
答案
type Replace<S extends string, From extends string, To extends string> = any验证
import type { Equal, Expect } from '@type-challenges/utils'
type cases = [
Expect<Equal<Replace<'foobar', 'bar', 'foo'>, 'foofoo'>>,
Expect<Equal<Replace<'foobarbar', 'bar', 'foo'>, 'foofoobar'>>,
Expect<Equal<Replace<'foobarbar', '', 'foo'>, 'foobarbar'>>,
Expect<Equal<Replace<'foobarbar', 'bar', ''>, 'foobar'>>,
Expect<Equal<Replace<'foobarbar', 'bra', 'foo'>, 'foobarbar'>>,
Expect<Equal<Replace<'', '', ''>, ''>>,
]参考
无
