xigang

// Abs returns absolute value of number
func Abs(value float64) float64 {
	return value * Sign(value)
}

// Sign returns signum of number: 1 in case of value > 0, -1 in case of value < 0, 0 otherwise
func Sign(value float64) float64 {
	if value > 0 {
		return 1
	} else if value < 0 {

xigang

package main

import (
	"encoding/json"
	"fmt"
	"io"
	"log"
	"strings"
)

xigang

package main

import (
	"encoding/json"
	"fmt"
	"os"
)

type ColorGroup struct {
	ID     int

xigang

const (
	regular = "^(1[3-8][0-9]|14[57]|15[0-35-9]|18[07-9])\\d{8}$"
)

func Validate(mobileNum string) bool {
	reg := regexp.MustCompile(regular)
	return reg.MatchString(mobileNum)
}

xigang

func MD5(s string) string {
	h := md5.New()
	h.Write([]byte(s))
	return hex.EncodeToString(h.Sum(nil))
}

func TwiceMD5(s string) string {
	return MD5(MD5(s))
}

xigang

package main

import (
	"flag"
	"fmt"
	"log"

	uuid "github.com/nu7hatch/gouuid"
)

xigang

package main

import (
	"log"
	"os"
	"text/template"
)

func main() {
	// Define a template.

xigang

package main

import "fmt"

func VersionOrdinal(version string) string {
	// ISO/IEC 14651:2011
	const maxByte = 1<<8 - 1
	vo := make([]byte, 0, len(version)+8)
	j := -1
	for i := 0; i < len(version); i++ {

xigang

package main

import (
	"database/sql"
	"fmt"
	_ "github.com/go-sql-driver/mysql"
	//"time"
)

/*

xigang

package main

import (
	"crypto"
	"crypto/rsa"
	"crypto/sha1"
	"crypto/x509"
	"encoding/base64"
	"fmt"
)