Typescript类型体操 – Mutable
2023-03-19 17:50
题目
实现一个通用的类型 Mutable<T>
,使类型 T
的全部属性可变(非只读)。
例如:
interface Todo {
readonly title: string;
readonly description: string;
readonly completed: boolean;
}
type MutableTodo = Mutable<Todo>; // { title: string; description: string; completed: boolean; }
English
Implement the generic Mutable<T>
which makes all properties in T
mutable (not readonly).
For example
interface Todo {
readonly title: string;
readonly description: string;
readonly completed: boolean;
}
type MutableTodo = Mutable<Todo>; // { title: string; description: string; completed: boolean; }
答案
type Mutable<T extends object> = { -readonly [K in keyof T]: T[K] };
在线演示
作者:Laggage
出处:https://www.cnblogs.com/laggage/p/type-challenge-mutable.html
说明:转载请注明来源
上一篇:中学英语阅读课优秀教案下一篇:雪菜鲜肉春卷