Smart cast to 'xxx' is impossible, because 'xxx' is a mutable property that could have been changed by this time
根本原因是可變變量和不可變變量的問題
具體查看var和val的區(qū)別
http://www.itdecent.cn/p/d5e505fe29a4
Smart cast to 'xxx' is impossible, because 'xxx' is a mutable property that could have been changed by this time
根本原因是可變變量和不可變變量的問題
具體查看var和val的區(qū)別
http://www.itdecent.cn/p/d5e505fe29a4