Function add7

TypeScript/StudyTypeScript/src/function.ts:34–36

(x: number, ...rest: number[])

/// 剩余参数
function add7(x: number, ...rest: number[]){ 
    return x + rest.reduce((pre,cur) => pre + cur)
}
console.log(add7(1,2,3,4,5))

/// 函数重载