Basic text files formatter

formatter.go

package main

import (
	"bufio"
	"log"
	"os"
	"strings"
)

func checkErr(err error) {
	if err != nil {
		log.Fatal(err)
	}
}

const countryCode = "sg"

func main() {
	from, err := os.Open(countryCode + ".csv")
	checkErr(err)
	defer from.Close()

	to, err := os.Create(countryCode + ".txt")
	checkErr(err)
	defer to.Close()

	scanner := bufio.NewScanner(from)

	for scanner.Scan() {
		line := scanner.Text()
		data := strings.Split(line, "	")
		to.WriteString(data[0] + "\n")
	}
	checkErr(scanner.Err())
}