HarmonyOS Next原生应用开发-从TS到ArkTS的适配规则（十）

let a = [{n: 1, s: '1'}, {n: 2, s: '2'}];

1.
2.

class C {
  n: number = 0
  s: string = ''
}

let a1 = [{n: 1, s: '1'} as C, {n: 2, s: '2'} as C]; // a1的类型为“C[]”
let a2: C[] = [{n: 1, s: '1'}, {n: 2, s: '2'}];    // a2的类型为“C[]”

1.
2.
3.
4.
5.
6.
7.
8.

let f = function (s: string) {
  console.log(s);
}

1.
2.
3.
4.

let f = (s: string) => {
  console.log(s);
}

1.
2.
3.
4.

const Rectangle = class {
  constructor(height: number, width: number) {
    this.height = height;
    this.width = width;
  }

  height
  width
}

const rectangle = new Rectangle(0.0, 0.0);

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.

class Rectangle {
  constructor(height: number, width: number) {
    this.height = height;
    this.width = width;
  }

  height: number
  width: number
}

const rectangle = new Rectangle(0.0, 0.0);

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.

class C {
  foo() {}
}

class C1 implements C {
  foo() {}
}

1.
2.
3.
4.
5.
6.
7.
8.

interface C {
  foo(): void
}

class C1 implements C {
  foo() {}
}

1.
2.
3.
4.
5.
6.
7.
8.