How to read/scan a .txt file in GO

The .txt file has many lines which each contain a single word. So I open the file and pass it to the reader:

file, err := os.Open("file.txt")
check(err)
reader := bufio.NewReader(file)

Now I want to store each line in a slice of strings. I believe I need to use ReadBytes, ReadString, ReadLine, or on of the Scan functions. Any advice on how to implement this would be appreciated. Thanks.

You can use ioutil.ReadFile() to read all lines into a byte slice and then call split on the result:

package main
import (
	"fmt"
	"io/ioutil"
	"log"
	"strings"
)
func main() {
	data, err := ioutil.ReadFile("/etc/passwd")
	if err != nil {
		log.Fatal(err)
	}
	lines := strings.Split(string(data), "\n")
	for _, line := range lines {
		fmt.Println("line:", string(line))
	}
}

Having r as an instance of *bufio.Reader, and myList as a slice of strings, than one could just loop and read lines till EOL.

   for {
        line, err := r.ReadBytes('\n')
        if err != nil {
            break
        }
        myList = append(myList, string(line))
   }