inconsistent_data_type.go

package main

import (
	"encoding/json"
	"fmt"
)

type City struct {
	Population float64 `json:"population"` // population in millions
	Name       string  `json:"name"`
}

func main() {

	ktmStr := `{"name" : "Kathmandu", "population" : "3.5"}`
	nyStr := `{"name" : "New York", "population" : 8.4 }`

	var ktm City
	var ny City

	json.Unmarshal([]byte(ktmStr), &ktm)
	json.Unmarshal([]byte(nyStr), &ny)

	fmt.Println(fmt.Sprintf("population of ktm: %.2f", ktm.Population))
	fmt.Println(fmt.Sprintf("population of ny: %.2f", ny.Population))
}