Golang : Convert string slice to struct and access with reflect example

Writing this down here for my own future references. Basically, what this code does is to convert a given string data slice into struct. Pretty handy to have when processing data output from proprietary systems.

Here you go!

 package main

 import (

 type User struct {
 Id int
 Username string

 func main() {

 data := [][]string{
 []string{"1", "Adam"},
 []string{"2", "Eve"},

 // convert data string slice to struct
 // such as
 //user1 := &User{"1","Adam"}
 //user2 := &User{"2","Eve"}

 users := []*User{}

 for _, v := range data {
 //fmt.Println("data: ", v[0], v[1])

 // convert v[0] to type integer
 id, err := strconv.Atoi(v[0])
 if err != nil {
 log.Fatal(err, v[0])
 user := &User{id, v[1]}
 users = append(users, user)

 // the reflect way
 for i := 0; i < 2; i++ {
 u := reflect.ValueOf(users[i])
 id := reflect.Indirect(u).FieldByName("Id")
 name := reflect.Indirect(u).FieldByName("Username")

 fmt.Println(id, name)



1 Adam


2 Eve


Happy coding!



  See also : Golang : How to get struct field and value by name

By Adam Ng

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