Get the different nubmbers from two slices

comapre.go

package main

import "fmt"

var m = make(map[int]int)

func addToMap(s []int) {

	for _, v := range s {
		m[v] += 1

	}
}

func main() {
	res := []int{}
	a := []int{1, 2, 5, 7}
	b := []int{1, 3, 6, 7, 10}

	addToMap(a)
	addToMap(b)

	for k, v := range m {
		if v == 1 {
			res = append(res, k)

		}

	}
	fmt.Println(res)
	// fmt.Println(m)
}