golang 类型转换

 1 import (
 2     "bytes"
 3     "encoding/binary"         
 4     "encoding/gob"
 5     "fmt"
 6 )
 7 
 8 func str_to_byte(src string) []byte {
 9     //strSlice := []string{src}    
10     buffer := &bytes.Buffer{}
11     gob.NewEncoder(buffer).Encode(src)
12     return buffer.Bytes()
13 }
14 
15 func uint64_to_byte(src uint64) []byte {
16     buf := make([]byte, 8)
17     binary.BigEndian.PutUint64(buf, src)
18     return buf
19 }
20 
21 func main() {
22     var u uint64
23     u = 128
24     bytes := uint64_to_byte(u)
25     fmt.Println(bytes)
26     str := "128"
27     bytes = str_to_byte(str)
28     fmt.Println(bytes)
29 }