ReadFile By lines and append to a slice

readfile.go

import (
    "os"
    "bufio"
)

func readFileByLine(filename string) (error,[]string){
	data := []string{}
	file, err := os.Open(filename)
	if err != nil{
		return err,[]string{}
	} else {
		scanner := bufio.NewScanner(file)
		for scanner.Scan() {
			data = append(data, scanner.Text())
		}

		if err := scanner.Err(); err != nil {
			return err,[]string{}
		}
		err := file.Close()
		if err != nil {
			return err,[]string{}
		}
		return nil,data
	}
}