If the expression represents a class or structure, retrieve a list of member variables, as expression objects.

如果表达式表示类或结构，则将作为表达式对象来检索成员变量列表。

youdao

If the expression represents a class or structure, retrieve a list of member variables, as expression objects.

如果表达式表示类或结构，则将作为表达式对象来检索成员变量列表。

youdao