How can I handle JSON decode errors in Go?

I'm getting an error when decoding JSON in my Go application. How can I handle this?

You can handle JSON decode errors in Go by checking the error returned by the json.Unmarshal function. Would you like an example?

Yes, please provide an example of how to do that.

Sure! Here's a simple example:

package main

import (
    "encoding/json"
    "fmt"
)

func main() {
    data := []byte(`{"name": "John", "age": "twenty"}`) // age is a string instead of an int
    var person struct {
        Name string `json:"name"`
        Age  int    `json:"age"`
    }

    err := json.Unmarshal(data, &person)
    if err != nil {
        fmt.Println("Error decoding JSON:", err)
        return
    }
    fmt.Println(person)
}

This will print an error message because the age is not an integer.

What should I do if the JSON structure is dynamic?

In that case, you can use a map or an interface{} to handle dynamic structures. Would you like to see an example of that?