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 }