Web我是C 的新手,目前正在使用模板以更好地理解它們。 這是我一直在嘗試的方法: 我想做幾乎相同的事情,但是這次是一個功能。 基本上像這樣: adsbygoogle window.adsbygoogle .push 只是為了確定 我不想要這樣: 編輯:我知道我可能還不太清楚。 我想能夠調 … WebDec 5, 2024 · If you're linking one .so to another, yet one more possibility is compiling with "-fvisibility=hidden" in gcc or g++. If both .so files were built with "-fvisibility=hidden" and the key method is not in the same .so as another of the virtual function's implementations, the latter won't see the vtable or typeinfo of the former.
c++ - typeinfo / typeid output - Stack Overflow
WebAug 15, 2015 · The safest, easiest and most correct way to do this would be to add a virtual name function of your own to Resource: virtual std::string name () const = 0; Then override it in every subclass to return the name of the class. Share. WebNov 17, 2024 · No. As documentation for std::type_info::name says: No guarantees are given; in particular, the returned string can be identical for several types and change between invocations of the same program. I don't know your exact use case, but chances are you can utilise C++11 std::type_index instead. f4u wing fold
c++ - Typeinfo how to get the name/id of the class in a …
WebException safety No-throw guarantee: this member function never throws exceptions. See also type_info::operator!= Compare types (public member function) type_info::name Get type name (public member function) WebJun 28, 2024 · If the idea is to output type information at compile time then try the following template struct WhichType; class Something {}; int main () { WhichType {}; } Live example here. When you compile this you should get an error that gives you the type of whatever is inside the templates when trying to instantiate … WebNov 17, 2024 · If you want to print the type of the object itself, try typeid (*u.get ()).name (). If you want polymorphic behaviour, use polymorphic classes. This requires defining at least one virtual function in Base. You need to define a virtual destructor anyway for correct behaviour of object deletion. does ginger tea affect pregnancy