3 Commits

Author	SHA1	Message	Date
Ki Rill	796bb12964	observer design patter	2021-03-06 15:32:17 +06:00
Ki Rill	6c0a53f7b6	observer design pattern	2021-03-06 13:17:06 +06:00
Ki Rill	d05a39b5cf	observer design pattern	2021-03-06 13:15:42 +06:00