update

utils/str/types.go

@@ -14,8 +14,23 @@ func (m Map) Json() []byte {
 	return result
 }
 
+func KeyFrom(args ...string) Key {
+	key := make(Key)
+	for i := range args {
+		key[args[i]] = struct{}{}
+	}
+	return key
+}
+
 type Key map[string]struct{}
 
+func (k Key) Add(args ...string) Key {
+	for i := range args {
+		k[args[i]] = struct{}{}
+	}
+	return k
+}
+
 func (k Key) Has(key string) bool {
 	_, ok := k[key]
 	return ok