ghelp

// json
data := map[string]interface{}{
    "name": "ghelp"
}
encodeStr := ghelp.JsonEncode(data)
decodeMap := ghelp.JsonDecode(encodeStr)

// md5 sha1
str := "1111"
encodeMd5 = ghelp.Md5(str) 
encodeSha1 = ghelp.Sha1(str) 
fmt.Println(encodeMd5, encodeSha1)
// md5:b59c67bf196a4758191e42f76670ceba 
// sha1:011c945f30ce2cbafc452f39840f025693339c42

// base64
data := "hello world"
encodeStr := ghelp.Base64Encode(data)
decodeStr := ghelp.Base64Decode(encodeStr)
fmt.Println(encodeStr, decodeStr)
// encode: VsbG8gd29ybGQ=
// decode: hello world

// 计算crc modbus
data := []byte{255,102}
ghelp.Crc16(data)

// 计算累计校验码
data := []byte{255,102}
ghelp.CheckSum(data)

// 计算签名
param := MAP{
    "corp_id":       "ding3590d5bb2ae3356d",
    "corp_name":     "杭州嘉策科技",
    "corp_logo_url": "",
    "industry":      "信息技术",
    "auth_info":     "",
    "platform":      1,
    "status":        1,
}
var timestamp int64 = 1687662061
key := "ding3590d5bb2ae3356d"
secret := "12345678"
sign := GenerateSign(param, timestamp, key, secret)

// IsFile
success := IsFile(filePath)

// IsDir
success := IsDir(dirPath)

// CopyFile
writeBytes, err := CopyFile(src, dst)

item1 := "a"
items1 := []string{"a","b","c"}
if !InArray(item1, items1) {
    t.Error("a in not in [a,b,c]")
}

fmt.Println(NextColName("Z"))
// output: AA

fmt.Println(NextColName("AA"))
// output: Z

fmt.Println(FirstColName())
// output: A

fmt.Println(LastColName())
// output: XFD


### fn 通用方法