typeScript 中的数组类型定义

const array_name: dataype[] = [val, val2];

const character: string[] = ["杨过", "小龙女"];

const numb: Number[] = [2, 4, 6, 8];
// 等同于
const numb2: Array<number> = [2, 4, 6, 8];

const str: String[] = ['西安', '北京', '上海'];
// 等同于
const str2: Array<string> = ['西安', '北京', '上海'];

const array2: (string | number)[] = ['孟浩然', 99];
// 等同于
const array: Array<string | number> = ['孟浩然', 99];

const array_name: Array<dataype> = [val, val2];

const array_name: Array<Array<datatype>> = [[val1, val2, val3],[v1, v2, v3]];
// 等同于
const array_name: datatype[][] = [[val1, val2, val3]];

const test: Array<Array<string>> = [['狮子头'], ['清蒸鲈鱼']];
// 等同于
const test: string[][] = [['狮子头', '清蒸鲈鱼', '鲜椒牛蛙'], ['北京烤鸭'], ['地锅鸡', '饿了']];

const test3: Array<[string]> = [['甘雨'], ['我的']];
// 等同于
const test3: [string][] = [['甘雨']];


// error
// 不能将类型“[string, string]”分配给类型“[string]”。
// 源具有 2 个元素，但目标仅允许 1 个。
const test3: [string][] = [['甘雨', '我的']];

const test5: Array<[string, string]> = [['刻晴', '八重神子'], ['雷电', '莫娜']];
// 等同于
const test5: [string, string][] = [['刻晴', '八重神子'], ['雷电', '莫娜']];