StrTool

str/str.go

@@ -6,13 +6,13 @@ type Str struct {
 }
 
 // struing to hex
-func HexEncode(str string) string {
+func (s *Str) HexEncode(str string) string {
 	byteStr := []byte(str)
 	return hex.EncodeToString(byteStr)
 }
 
 // hex to string
-func HexDecode(str string) (string, error) {
+func (s *Str) HexDecode(str string) (string, error) {
 	hexStr, err := hex.DecodeString(str)
 	if err != nil {
 		panic(err)

str/str_test.go

@@ -5,11 +5,13 @@ import (
 	"testing"
 )
 
+var StrTool Str
+
 func TestHexEncode(t *testing.T) {
-	fmt.Println(HexEncode("hello world!"))
+	fmt.Println(StrTool.HexEncode("hello world!"))
 	//68656c6c6f20776f726c6421
 }
 func TestHexDecode(t *testing.T) {
-	fmt.Println(HexDecode("68656c6c6f20776f726c6421"))
+	fmt.Println(StrTool.HexDecode("68656c6c6f20776f726c6421"))
 	//hello world! <nil>
 }