2 Commits (a55f692048115b56aebc2b0a90319a070f480e78)

Author	SHA1	Message	Date
FengJungle	5b21352028	fix vitual base classes issues: add virtual destruct functions.	2021-04-04 21:09:08 +08:00
FengJungle	8f767aa8b8	add Visitor Pattern	2019-11-10 22:59:08 +08:00