golang 类型转换

 import (
     "bytes"
     "encoding/binary"
     "encoding/gob"
     "fmt"
 )

 func str_to_byte(src string) []byte {
     //strSlice := []string{src}
     buffer := &bytes.Buffer{}
     gob.NewEncoder(buffer).Encode(src)
     return buffer.Bytes()
 }

 func uint64_to_byte(src uint64) []byte {
     buf := make([]byte, )
     binary.BigEndian.PutUint64(buf, src)
     return buf
 }

 func main() {
     var u uint64
     u =
     bytes := uint64_to_byte(u)
     fmt.Println(bytes)
     str := ""
     bytes = str_to_byte(str)
     fmt.Println(bytes)
 }