How do I encode data to JSON in Go?

How do I encode data to JSON in Go?

You can use the encoding/json package in Go. First, define your data structure, then use json.Marshal to encode it.

Can you show me a code example?

Sure! Here's a simple example:

package main

import (
    "encoding/json"
    "fmt"
)

type Person struct {
    Name string `json:"name"`
    Age  int    `json:"age"`
}

func main() {
    p := Person{Name: "Alice", Age: 30}
    jsonData, err := json.Marshal(p)
    if err != nil {
        fmt.Println(err)
    }
    fmt.Println(string(jsonData))
}

What if I want to pretty-print the JSON?

You can use json.MarshalIndent instead of json.Marshal. It allows you to specify indentation for better readability.

Thanks! Is there a way to decode JSON back to a Go struct?

Yes! You can use json.Unmarshal to decode JSON data back into a Go struct. Just pass the JSON data and a pointer to your struct.