github.com/roboticscm/goman@v0.0.0-20210203095141-87c07b4a0a55/doc/progs/gobs2.go (about)

     1  // compile
     2  
     3  // Copyright 2011 The Go Authors. All rights reserved.
     4  // Use of this source code is governed by a BSD-style
     5  // license that can be found in the LICENSE file.
     6  
     7  package main
     8  
     9  import (
    10  	"bytes"
    11  	"encoding/gob"
    12  	"fmt"
    13  	"log"
    14  )
    15  
    16  type P struct {
    17  	X, Y, Z int
    18  	Name    string
    19  }
    20  
    21  type Q struct {
    22  	X, Y *int32
    23  	Name string
    24  }
    25  
    26  func main() {
    27  	// Initialize the encoder and decoder.  Normally enc and dec would be
    28  	// bound to network connections and the encoder and decoder would
    29  	// run in different processes.
    30  	var network bytes.Buffer        // Stand-in for a network connection
    31  	enc := gob.NewEncoder(&network) // Will write to network.
    32  	dec := gob.NewDecoder(&network) // Will read from network.
    33  	// Encode (send) the value.
    34  	err := enc.Encode(P{3, 4, 5, "Pythagoras"})
    35  	if err != nil {
    36  		log.Fatal("encode error:", err)
    37  	}
    38  	// Decode (receive) the value.
    39  	var q Q
    40  	err = dec.Decode(&q)
    41  	if err != nil {
    42  		log.Fatal("decode error:", err)
    43  	}
    44  	fmt.Printf("%q: {%d,%d}\n", q.Name, *q.X, *q.Y)
    45  }