// Vikunja is a to-do list application to facilitate your life.
// Copyright 2018-present Vikunja and contributors. All rights reserved.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public Licensee as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public Licensee for more details.
//
// You should have received a copy of the GNU Affero General Public Licensee
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

package utils

// find the elements which appear in slice1, but not in slice2
func NotIn(slice1 []int64, slice2 []int64) []int64 {
	var diff []int64

	for _, s1 := range slice1 {
		found := false
		for _, s2 := range slice2 {
			if s1 == s2 {
				found = true
				break
			}
		}
		// int64 not found. We add it to return slice
		if !found {
			diff = append(diff, s1)
		}
	}
	return diff
}