example_test.go

package main

import (
	"encoding/json"
	"fmt"
	"reflect"
)

type Article struct {
	Title   string `json:"title"`
	Content string `json:"content"`
}

type Result struct {
	Hits []string
}

func Example() {
	const formatString = `{  
		"title": %q,
		"content": "%s article's content"
	 }`
	var result = Result{
		Hits: []string{
			fmt.Sprintf(formatString, "First", "First"),
			fmt.Sprintf(formatString, "Second", "Second"),
			fmt.Sprintf(formatString, "Third", "Third"),
		},
	}

	articlesContainer := result.Each(reflect.TypeOf(Article{}))
	for _, article := range articlesContainer {
		a := article.(Article)
		fmt.Printf("Title: %s, Content: %s\n", a.Title, a.Content)
	}
	// Output:
	// Title: First, Content: First article's content
	// Title: Second, Content: Second article's content
	// Title: Third, Content: Third article's content
}

func (r Result) Each(typ reflect.Type) []interface{} {
	var slice []interface{}
	for _, hit := range r.Hits {
		v := reflect.New(typ).Elem()
		if err := json.Unmarshal([]byte(hit), v.Addr().Interface()); err == nil {
			slice = append(slice, v.Interface())
		}
	}
	return slice
}