package assist import ( "fmt" "git.bvbej.com/bvbej/base-golang/pkg/time_parse" "math" "math/rand" "strconv" "time" "unicode" ) func GetOrderNumber() string { parse, _ := time.Parse(time_parse.CSTLayout, "2021-06-01 00:00:00") hours := time.Now().Sub(parse).Hours() day := math.Floor(hours / 24) prefix := fmt.Sprintf("%05d", int64(day)) format := time.Now().Format("") + "%0" + strconv.Itoa(10) + "d" n := math.Pow10(10) return prefix + fmt.Sprintf(format, rand.New(rand.NewSource(time.Now().UnixNano())).Int63n(int64(n))) } func StringInArray(str string, strArray []string) bool { for _, s := range strArray { if str == s { return true } } return false } func Uint64InArray(str uint64, uint64Array []uint64) bool { for _, s := range uint64Array { if str == s { return true } } return false } func CurrencyDecimal(value float64) float64 { value, _ = strconv.ParseFloat(fmt.Sprintf("%.8f", value), 64) return value } func IsChinese(str string) bool { var count int for _, v := range str { if unicode.Is(unicode.Han, v) { count++ break } } return count > 0 } func RandInt(max int) int { rand.Seed(time.Now().UnixNano()) <-time.After(time.Nanosecond) return rand.Intn(max) }