string -> int
int,err := strconv.Atoi(string)
string -> int64
int64,err := strconv.ParseInt(string,10,64)
int -> string
string := strconv.Itoa(int)
int64 -> string
string:=strconv.FormatInt(int64,10)
string -> map
dict := make(map[string]interface{})
err := json.Unmarshal([]byte(string),&dict)
map -> string
dict := map[string]interface{"name":"jeking"}
string :=json.Marshal(dict)
bytes -> string
string := string(bytes) //byte[]
string -> bytes
bytes := []byte(string)
