Function calculate

calculate(operator, ...args): number

计算所有数

Parameters

operator: string
操作符
Rest...args: any[]
需要计算的数...

Returns number

Example

calculate('+', 1, 2, 3, 4); /// 10
calculate('+', 1, 2, 3, undefined); /// 6
calculate('*', 1, 2, 3); /// 6
calculate('*', 1, 2, 3, undefined); /// 0
calculate('-', 10, 2, 3); /// 5
calculate('/', 10, 2, 2); /// 2.5