Golang React JS Technology Blog

Golang write CSV records

The csv package have a NewWriter() function which returns a Writer object which is used for writing CSV data. A csv.Writer writes csv records which are terminated by a newline and uses a comma as the field delimiter. The following source code snippet shows how to write data to a CSV file.

Example

package main
 
import (
	"encoding/csv"
	"log"
	"os"
)
 
func main() {
	rows := [][]string{
		{"Name", "City", "Language"},
		{"Pinky", "London", "Python"},
		{"Nicky", "Paris", "Golang"},
		{"Micky", "Tokyo", "Php"},
	}
 
	csvfile, err := os.Create("test.csv")
 
	if err != nil {
		log.Fatalf("failed creating file: %s", err)
	}
 
	csvwriter := csv.NewWriter(csvfile)
 
	for _, row := range rows {
		_ = csvwriter.Write(row)
	}
 
	csvwriter.Flush()
 
	csvfile.Close()
}
A two-dimensional slice rows contains sample csv records. The os.Create() function creates a csv file test.csv; truncate all it's records if already exists and returning an instance of os.File object. The csvwriter.Write(row) method is called to write each slice of strings to the file as CSV records.
Most Helpful This Week
Illustration of Cigarette Smokers Problem in Golang GO Program to Check Armstrong Number How to remove special characters from a string in GoLang? How to set timeout for http.Get() requests in Golang? Cannot use <variable> (type <type>) as type <new-type> error in Golang Web Application to generate QR code in Golang