Why do I get the 'gob: type not registered for interface: map[string]interface {}' error in Go?

Patricia Arquette
Release: 2024-11-11 09:29:03
Original
327 people have browsed it

Why do I get the

Error: "gob: type not registered for interface: map[string]interface {}"

In Go, the gob package provides support for encoding and decoding values into a binary representation. However, when trying to encode a map[string]interface{} value using gob, you may encounter the error:

gob: type not registered for interface: map[string]interface {}
Copy after login

This error signifies that the gob package is not aware of the type map[string]interface{}. To resolve this issue, you must explicitly register the type using the gob.Register function.

gob.Register(map[string]interface{}{})
Copy after login

By registering the type, you are informing the gob package that it should recognize and handle map[string]interface{} values during encoding and decoding operations.

Here's a modified version of the code you provided that includes the necessary registration:

package main

import (
    "bytes"
    "encoding/gob"
    "encoding/json"
    "fmt"
    "log"
)

func CloneObject(a, b interface{}) []byte {
    buff := new(bytes.Buffer)
    enc := gob.NewEncoder(buff)
    dec := gob.NewDecoder(buff)
    // Register the map[string]interface{} type for encoding
    gob.Register(map[string]interface{}{})
    err := enc.Encode(a)
    if err != nil {
        log.Panic("e1: ", err)
    }
    b1 := buff.Bytes()
    err = dec.Decode(b)
    if err != nil {
        log.Panic("e2: ", err)
    }
    return b1
}

func main() {
    var a interface{}
    a = map[string]interface{}{"X": 1}
    b2, err := json.Marshal(&a)
    fmt.Println(string(b2), err)

    var b interface{}
    b1 := CloneObject(&a, &b)
    fmt.Println(string(b1))
}
Copy after login

After registering the type, you can successfully encode and decode the map[string]interface{} value using gob.

The above is the detailed content of Why do I get the 'gob: type not registered for interface: map[string]interface {}' error in Go?. For more information, please follow other related articles on the PHP Chinese website!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Latest Articles by Author
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template