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传递父类作为参数?
是否可以在创建实例之前不指定父类 例如像这样的东西 class SomeParentClass something class Child unspecifiedParentClass something instance Child So
python
inheritance
arguments
unspecified
Opencv error unspecified error incorrect element name operator <<
1 问题描述 今天在用opencv的FileStorage类进行xml文件读写操作的时候报了个错 源代码如下所示 xff1a include lt opencv2 opencv hpp gt include lt vector gt inc
opencv
Error
unspecified
Incorrect
element