//基础映射类型
// interface User10
// {
//     readonly name:string;
//     readonly age:number;
//     male?:boolean;
// }

// type FilterReadOnly<Type> = {
//     - readonly [Property in keyof Type]:Type[Property];
//     //- readonly [Property in keyof Type] - ?:Type[Property];
// }

// type PublicUser10 = FilterReadOnly<User10>;
// const publicUser:PublicUser10 = {
//     name:"dell",
//     age:30,
//     male:true,
// }
// publicUser.age = 31;
//映射类型高级语法
// interface User10
// {
//     readonly name:string;
//     readonly age:number;
//     male:boolean;
// }

// type DeleteMaleProperty<Type> = {
//     [Property in keyof Type as Exclude<Property,'male'>]:Type[Property];
    
// }

// type UserWithoutGender = DeleteMaleProperty<User10>;
// const user10:UserWithoutGender = {
//     name:"dell",
//     age:30,
// }
//2.字面量语法例子
interface User10
{
    name:string;
    age:number;
    male:boolean;
    sex:string;
}

interface UserFunctions{
    getName:()=>string;
    getAge:()=>number;
    getMale:()=>boolean;
}


type GetPropertyFunctions<Type> = {
    [Property in keyof Type as `get${Capitalize<string & Property>}`]:()=>Type[Property];
}
type UserFunctionsType = GetPropertyFunctions<User10>;
//3.union类型使用
type SquareEvent = {
    kind:'square';
    x: number;
    y: number;
}
type CircleEvent = {
    kind:'circle';
    radius: number;
}
type GenerateEventsFunctions<Events extends{ kind:string}>={
    [Event in Events as Event['kind']]:(event:Event)=>number;
}
type NewType = GenerateEventsFunctions<SquareEvent|CircleEvent>;