heppu · January 26, 2019 10:05
diff --git a/safe_storage_changes.go b/safe_storage_changes.go
 type Storage interface {
 	Add(key, val string) error
 }

 func (s *SafeStorage) Add(key, val string) error {
 	s.storageMu.Lock()
 	defer s.storageMu.Unlock()
 	return s.storage.Add(key, val)
 }
	type Storage interface {
	Add(key, val string) error
	}

	func (s *SafeStorage) Add(key, val string) error {
	s.storageMu.Lock()
	defer s.storageMu.Unlock()
	return s.storage.Add(key, val)
	}