Capitalize Words

约 172 字小于 1 分钟

2026-02-11

题目

实现CapitalizeWords<T>，它将字符串的每个单词的第一个字母转换为大写，其余部分保持原样。

例如

type capitalized = CapitalizeWords<"hello world, my friends"> // 预期为 'Hello World, My Friends'

解题思路

待补充

答案

type CapitalizeWords<S extends string> = any

验证

import type { Equal, Expect } from '@type-challenges/utils'

type cases = [
  Expect<Equal<CapitalizeWords<'foobar'>, 'Foobar'>>,
  Expect<Equal<CapitalizeWords<'FOOBAR'>, 'FOOBAR'>>,
  Expect<Equal<CapitalizeWords<'foo bar'>, 'Foo Bar'>>,
  Expect<Equal<CapitalizeWords<'foo bar hello world'>, 'Foo Bar Hello World'>>,
  Expect<Equal<CapitalizeWords<'foo bar.hello,world'>, 'Foo Bar.Hello,World'>>,
  Expect<Equal<CapitalizeWords<'aa!bb@cc#dd$ee%ff^gg&hh*ii(jj)kk_ll+mm{nn}oo|pp🤣qq'>, 'Aa!Bb@Cc#Dd$Ee%Ff^Gg&Hh*Ii(Jj)Kk_Ll+Mm{Nn}Oo|Pp🤣Qq'>>,
  Expect<Equal<CapitalizeWords<''>, ''>>,
]

参考

无