each.go

package main

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

var test = `{  
	"title":"%s",
	"content":"%s article's content"
 }`

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

type Result struct {
	Hits [][]byte
}

func main() {
	var result = Result{
		Hits: [][]byte{
			[]byte(fmt.Sprintf(test, "First", "First")),
			[]byte(fmt.Sprintf(test, "Second", "Second")),
			[]byte(fmt.Sprintf(test, "Third", "Third")),
		},
	}

	articlesContainer := result.Each(reflect.TypeOf(Article{}))
	for _, article := range articlesContainer {
		fmt.Printf("Title: %s, Content: %s\n", article.(Article).Title, article.(Article).Content)
	}
}

func (r *Result) Each(typ reflect.Type) []interface{} {
	if len(r.Hits) == 0 {
		return nil
	}
	var slice []interface{}
	for _, hit := range r.Hits {
		v := reflect.New(typ).Elem()
		if err := json.Unmarshal(hit, v.Addr().Interface()); err == nil {
			slice = append(slice, v.Interface())
		}
	}
	return slice
}