更漂亮的 TypeScript 匿名类声明？
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A more beautiful TypeScript anonymous class declaration?
提问by Christopher King
Is there a more beautiful way to express an anonymous class(?) with typed members in typeScript than this?
在 typeScript 中，有没有比这更漂亮的方式来表达带有类型成员的匿名类（？）？
class Foo {
member = {
aNumber = <number>undefined;
aBoolean = <bool>undefined;
}
}
回答by Ryan Cavanaugh
The only anonymousalternative would be:
唯一的匿名替代方案是：
class Foo {
member: { aNumber?: number; aBoolean?: bool; } = {
aNumber: undefined,
aBoolean: undefined
}
}
You're usually better off just writing an interfaceso you can name the type.
你通常最好只写一个，interface这样你就可以命名类型。
回答by basarat
Since members are undefined by default you could simply go with:
由于默认情况下成员未定义，您可以简单地使用：
class Foo {
member:{aNumber:number;aBoolean:bool;} = <any>{};
}
回答by Micheal Hill
In newer versions of typescript, this can be achieved using optional properties:
在较新版本的打字稿中，这可以使用可选属性来实现：
class Foo {
member: { aNumber?: number; aBoolean?: boolean; } = {}
}
