编辑代码

package main
import "fmt"

var ShopCouponTypes = &[...]int{
	21, //商家折扣券
	22, //商家直减券
	23, //商家满减券
	31, //渠道折扣券
	32, //渠道直减券
	33, //渠道满减券
	41, //单品折扣券
	42, //单品直减券
	43, //单品满减券
}

func IsShopCoupon(couponType int) bool {
	for _, data := range ShopCouponTypes {
		if couponType == data {
			return true
		}
	}
	return false
}

func main () {
    fmt.Println(ShopCouponTypes)
    fmt.Println(IsShopCoupon(23))
    fmt.Println(IsShopCoupon(26))
}