本文整理汇总了C++中Any::clear方法的典型用法代码示例。如果您正苦于以下问题:C++ Any::clear方法的具体用法?C++ Any::clear怎么用?C++ Any::clear使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Any
的用法示例。
在下文中一共展示了Any::clear方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
int main() {
BaseA ba;
BaseB bb;
DerivA da;
DerivB db;
Any any;
assert(!any.isSet());
any.set(ba);
assert(any.isSet());
assert(any.get<BaseA>() == &ba);
assert(any.get<BaseB>() == NULL);
assert(any.get<DerivA>() == NULL);
assert(any.get<DerivB>() == NULL);
any.clear();
assert(!any.isSet());
assert(any.get<BaseA>() == NULL);
assert(any.get<BaseB>() == NULL);
assert(any.get<DerivA>() == NULL);
assert(any.get<DerivB>() == NULL);
any = bb;
assert(any.isSet());
assert(any.get<BaseA>() == NULL);
assert(any.get<BaseB>() == &bb);
assert(any.get<DerivA>() == NULL);
assert(any.get<DerivB>() == NULL);
any = da;
assert(any.isSet());
assert(any.get<BaseA>() == NULL);
assert(any.get<BaseB>() == NULL);
assert(any.get<DerivA>() == &da);
assert(any.get<DerivB>() == NULL);
any = db;
assert(any.isSet());
assert(any.get<BaseA>() == NULL);
assert(any.get<BaseB>() == NULL);
assert(any.get<DerivA>() == NULL);
assert(any.get<DerivB>() == &db);
Any any2 = any;
assert(any.isSet());
assert(any.get<BaseA>() == NULL);
assert(any.get<BaseB>() == NULL);
assert(any.get<DerivA>() == NULL);
assert(any.get<DerivB>() == &db);
Any any3(any2);
assert(any.isSet());
assert(any.get<BaseA>() == NULL);
assert(any.get<BaseB>() == NULL);
assert(any.get<DerivA>() == NULL);
assert(any.get<DerivB>() == &db);
return 0;
}