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源有X个元素,但目标只允许1个元素

typescript angular

1

Shahar Shokrani · 技术社区 · 5 年前

源有X个元素,但目标只允许1个元素。

export const FooMapping: [{id: FooOperation, display: string}] = [
    { id: FooOperation.Undefined, display: 'Nothing' },
    { id: FooOperation.A, display: 'I'm A' },
    { id: FooOperation.B, display: 'I'm B' }
];

export enum FooOperation {
    Undefined = 0,
    A = 1,
    B = 2,
}

{id: FooOperation, display: string} ?

1 回复 | 直到 5 年前

1

2

pzaenger lio 5 年前

[{id: FooOperation, display: string}] 定义 tuple 只有一个元素。

尝试:

export const FooMapping: Array<{id: FooOperation; display: string}> = [
    { id: FooOperation.Undefined, display: 'Nothing' },
    { id: FooOperation.A, display: "I'm A" },
    { id: FooOperation.B, display: "I'm B" }
];

或者想想类似的事情:

interface Foo {
  id: FooOperation;
  display: string;
}

export const FooMapping: Foo[] = [...];