canbeempty is a Go package that provides a custom JSON marshaling function, MarshalWithCanBeEmpty, which considers the custom can_be_empty tag. Fields tagged with can_be_empty will be included in the JSON output even if they have zero values.

• Custom JSON marshaling with can_be_empty tag support.
• Simple and intuitive to use in any Go project.

To install the package, run:

go get github.com/yourusername/canbeempty

Import the canbeempty package in your Go file:

import "github.com/yourusername/canbeempty"

Define your struct and use the can_be_empty tag for fields that should be included in the JSON output even if they have zero values:

type MyStruct struct {
    Name  string `json:"name,can_be_empty"`
    Age   int    `json:"age"`
    Score int    `json:"score"`
}

Use the MarshalWithCanBeEmpty function to marshal your struct to JSON:

package main

import (
    "fmt"
    "log"

    "github.com/yourusername/canbeempty"
)

type MyStruct struct {
    Name  string `json:"name,can_be_empty"`
    Age   int    `json:"age"`
    Score int    `json:"score"`
}

func main() {
    myStruct := MyStruct{
        Name:  "",
        Age:   0,
        Score: 0,
    }

    jsonData, err := canbeempty.MarshalWithCanBeEmpty(myStruct)
    if err != nil {
        log.Fatal(err)
    }

    fmt.Println(string(jsonData))
}

Given the struct:

myStruct := MyStruct{
    Name:  "",
    Age:   0,
    Score: 0,
}

The output will be:

{
    "name": "",
    "age": 0,
    "score": 0
}

This project is licensed under the MIT License - see the LICENSE file for details.