1 files changed, 29 insertions, 0 deletions
diff --git a/todolist/util.go b/todolist/util.go
new file mode 100644
index 0000000..4f5371d
--- /dev/null
+++ b/todolist/util.go
@@ -0,0 +1,29 @@
+package todolist
+
+func AddIfNotThere(arr []string, items []string) []string {
+	for _, item := range items {
+		there := false
+		for _, arrItem := range arr {
+			if item == arrItem {
+				there = true
+			}
+		}
+		if !there {
+			arr = append(arr, item)
+		}
+	}
+	return arr
+}
+
+func AddTodoIfNotThere(arr []Todo, item Todo) []Todo {
+	there := false
+	for _, arrItem := range arr {
+		if item.Id == arrItem.Id {
+			there = true
+		}
+	}
+	if !there {
+		arr = append(arr, item)
+	}
+	return arr
+}