L0v3ch4n

外观

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