How to get intersection of two slice in golang?

Question

Is there any efficient way to get intersection of two slices in Go?

I want to avoid nested for loop like solution

slice1 := []string{\"foo\", \"bar\",\"hello\"}         


        

Answer 1

if there exists no blank in your []string, maybe you need this simple code:

func filter(src []string) (res []string) {
    for _, s := range src {
        newStr := strings.Join(res, " ")
        if !strings.Contains(newStr, s) {
            res = append(res, s)
        }
    }
    return
}

func intersections(section1, section2 []string) (intersection []string) {
    str1 := strings.Join(filter(section1), " ")
    for _, s := range filter(section2) {
        if strings.Contains(str1, s) {
            intersection = append(intersection, s)
        }
    }
    return
}