Table of Contents

代数数据类型ADT
#

type Props = {
  name: string
} & (
    {
      gender: 'male';
      salary: number
    }
    |
    {
      gender: 'female',
      weight: number
    }
  )

这样可以动态地根据gender来决定下一个需要的属性是salary还是weight。

type ApiResponse<T> = 
| {status: 'success'; data: T; timestamp: Date}
| {status: 'error'; message: string; timestamp: Date}

let response1: ApiResponse<number> = {
  status: 'success',
  data: 100,
  timestamp: new Date()
};
let response2: ApiResponse<number> = {
  status: 'error',
  message: 'error la',
  timestamp: new Date()
};

代数数据类型ADT #

代数数据类型ADT
#