Golang--Network byte codec (2)

This is a creation in Article, where the information may have evolved or changed.

The following is the use of standard library binary to encode and decode

• Decoding
  ① Use bytes. Newreader/bytes. Buffer to store the ASCII string to decode
  ② uses binary. Read to decode
  

  package mainimport  (      "bytes"      "encoding/binary"      "FMT") Func main ()  {     var pi float64    bpi := []byte{0x18,  0x2d, 0x44, 0x54, 0xfb, 0x21, 0x09, 0x40}    buf :=  bytes. Newreader (BPI)     err := binary. Read (buf, binary. LITTLEENDIAN, &PI)     //  Here you can continue to read out the existence of variables,  so that you can decode a lot of,  read order and variable type to     // binary. Read (buf, binary. LITTLENDIAN, &V2)     if err != nil {         fmt. Println ("Binary. read failed: ",  err)     }    fmt. Print (PI)     // 3.141592653589793} 

  
  

• Coding
  ① Use bytes. Buffer to store the string generated by the encoding
  ② uses binary. Write to encode the buf stored in the ①
  

  Package Mainimport ("bytes" "Encoding/binary" "FMT") func main () {var pi float64 = 3.141592653589793 buf: = new (bytes. Buffer) Err: = Binary. Write (buf, Binary. Littleendian, PI)//here can continue to write in buf, there are buf//binary. Write (buf, Binary. Littleendian, UInt16 (12345)) if err! = Nil {fmt. Println ("Binary. Read failed: ", err)} FMT. Print (BUF. Bytes ())//[24 45 68 84 251 33 9 64]}

Multi mode

• Decoding
  

  Ing

• Coding

  package mainimport  (     "bytes"      "Encoding/binary"       "FMT") Func main ()  {    buf := new (bytes. Buffer)     var data = []interface{}{         uint16 (61374),         int8 ( -54),         uint8 (254),     }    for _, v :=  range data {        err := binary. Write (buf, binary. LITTLEENDIAN, V)         if err != nil {             fmt. Println ("Binary. write failed: ",  err)         }    }     fmt. Printf ("%x", Buf. Bytes ())     // beefcafe  This is a string of 16 binary strings     //  here converted to 16 binary integers?}