aoc2021/03/code.go

package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"os"
	"strings"
)

func readInput(file string) []string {
	content, err := ioutil.ReadFile(file)
	if err != nil {
		log.Fatal(err)
	}

	lines := strings.Split(string(content), "\n")
	return lines
}

func main() {
	if len(os.Args) < 2 {
		log.Fatal("You need to provide path to input file!")
	}

	lines := readInput(os.Args[1])
	fmt.Println(lines)
}