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front-end-example/06-typescript/03-array-and-function-types/README.md
charlie f3bdaa4e88 feat: add TypeScript lessons and learning panel 
- Introduced a new script to check TypeScript lesson files for errors.
- Created a main TypeScript file to render lessons and their details.
- Added lesson definitions with starter and answer codes.
- Implemented a user interface for navigating and running lessons.
- Styled the application with CSS for a better user experience.
- Updated README to reflect the new TypeScript section and usage instructions.
2026-03-19 10:06:11 +08:00

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练习 3：数组和函数类型

目标

学会给数组和函数写类型。

你要练什么

  • number[]
  • 参数类型
  • 返回值类型

任务

  • 定义一个数字数组
  • 写一个 sum 函数
  • 让它接收两个数字并返回数字结果

文件