# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2016-08-02 14:45:11 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/760486610014208000) Swift <-> ObjC is not 100% :/ Swift defined object, used as property in Obj-C class. That property not visible from another Swift class :/