1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package main
import (
"encoding/json"
"fmt"
"log"
"reflect"
)
func Decode() {
b := []byte(`{"Name":"Wednesday","Age":6,"Parents":["Gomez","Morticia"]}`)
var f interface{}
err := json.Unmarshal(b, &f)
// STOP OMIT
if err != nil {
panic(err)
}
expected := map[string]interface{}{
"Name": "Wednesday",
"Age": float64(6),
"Parents": []interface{}{
"Gomez",
"Morticia",
},
}
if !reflect.DeepEqual(f, expected) {
log.Panicf("Error unmarshaling %q, expected %q, got %q", b, expected, f)
}
f = map[string]interface{}{
"Name": "Wednesday",
"Age": 6,
"Parents": []interface{}{
"Gomez",
"Morticia",
},
}
// STOP OMIT
m := f.(map[string]interface{})
for k, v := range m {
switch vv := v.(type) {
case string:
fmt.Println(k, "is string", vv)
case int:
fmt.Println(k, "is int", vv)
case []interface{}:
fmt.Println(k, "is an array:")
for i, u := range vv {
fmt.Println(i, u)
}
default:
fmt.Println(k, "is of a type I don't know how to handle")
}
}
// STOP OMIT
}
func main() {
Decode()
}
|
