Loop over a slice in go

Issue

I’ve the following struct and i want to loop over a slice embedded in it :

package main

import (
    "encoding/json"
    "fmt"
)

var input = `[
  {
          "Country_Name": "USA",
          "Cities": ["city_1","city_2"]
          },{
            "Country_Name": "UK",
            "Cities": ["city_1","city_2"]
          }
      ] `

func main() {
    var prop []struct {
        CountryName string   `json:"Country_Name"`
        Cities      []string `json:"Cities"`
    }
    if err := json.Unmarshal([]byte(input), &prop); err != nil {
        panic(err)
    }

    for _, field := range prop {
        fmt.Printf("Country_Name : %s\n", field.CountryName)

    }

}

That’s to get Cities fields

Any help for that , Thank you in advance

Solution

Perhaps I’m missing something, but why not just:

for _, field := range prop {
    fmt.Printf("Country_Name : %s\n", field.CountryName)
    for _, city := range field.Cities {
        fmt.Printf("City: %s\n", city)
    }
}

Answered By – Shay Nehmad

Answer Checked By – Cary Denson (GoLangFix Admin)