Struct Tags

Struct tags document the JSON field names used for exported Go fields.

struct_tags.go

package main

import (
	"fmt"
	"strconv"
)

type Product struct {
	SKU     string `json:"sku"`
	InStock bool   `json:"in_stock"`
}

func main() {
	var sku = 
	product := Product{SKU: sku, InStock: true}

	text := fmt.Sprintf(`{"sku":%s,"in_stock":%t}`, strconv.Quote(product.SKU), product.InStock)

	fmt.Println("sku=", product.SKU)
	fmt.Println("inStock=", product.InStock)
	fmt.Println("json=", text)
}

package main

import (
	"fmt"
	"strconv"
)

type Product struct {
	SKU     string `json:"sku"`
	InStock bool   `json:"in_stock"`
}

func main() {
	var sku = 
	product := Product{SKU: sku, InStock: true}

	text := fmt.Sprintf(`{"sku":%s,"in_stock":%t}`, strconv.Quote(product.SKU), product.InStock)

	fmt.Println("sku=", product.SKU)
	fmt.Println("inStock=", product.InStock)
	fmt.Println("json=", text)
}

package main

import (
	"fmt"
	"strconv"
)

type Product struct {
	SKU     string `json:"sku"`
	InStock bool   `json:"in_stock"`
}

func main() {
	var sku = 
	product := Product{SKU: sku, InStock: true}

	text := fmt.Sprintf(`{"sku":%s,"in_stock":%t}`, strconv.Quote(product.SKU), product.InStock)

	fmt.Println("sku=", product.SKU)
	fmt.Println("inStock=", product.InStock)
	fmt.Println("json=", text)
}

struct tags JSON tags let a Go struct keep Go-style field names while publishing JSON-style field names.