go_helpers/str/slice.go

package str

// AppendIfMissing adds a string to a slice when it's not present yet
func AppendIfMissing(slice []string, s string) []string {
	for _, e := range slice {
		if e == s {
			return slice
		}
	}
	return append(slice, s)
}

// StringInSlice checks for the existence of a string in the slice
func StringInSlice(a string, list []string) bool {
	for _, b := range list {
		if b == a {
			return true
		}
	}
	return false
}