WebZhangyi. 本文主要内容为C++中RTTI的简单介绍和LLVM RTTI的使用方法、简单实现解析。. 1. C++标准RTTI. C++提供了 typeid 和 dynamic_cast 两个关键字来提供动态类型信息和动态类型转换,使用需要在在编译器选项中指定 -rtti (clang和gcc都默认开启),关闭则可以设置 … WebAug 11, 2024 · std::type_info::hash_code - cppreference.com std::type_info:: hash_code C++ Utilities library Type support std::type_info Returns an unspecified value (here denoted by hash code) such that for all std::type_info objects referring to the same type, their hash code is the same.
std::type_info::hash_code - cppreference.com
WebDec 17, 2014 · In C++03, when you use the operator typeid, a type_info object is returned. Is it possible to retrieve the size of the given type based only on this result, such as returned by the sizeof operator? For example: std::type_info info = typeid (int); int intSize = sizeof (int); int intSize2 = info.getSize (); // doesn't exist! WebC++ Library - Previous Page. Next Page . Introduction. It contains type information and stores information about a type. It can be used to compare two types or … diary for sale 2022
c++ - typeid and type_info class - Stack Overflow
Webstd:: type_info ::before C++98 C++11 bool before (const type_info& rhs) const; Compare order of types Returns whether the type precedes the type identified by rhs in some implementation-specific order. This implementation-specific order is not necessarily related to size, inheritance relations or declaration order, and may differ between programs. WebAug 2, 2024 · Remarks. The typeid operator allows the type of an object to be determined at run time. The result of typeid is a const type_info&. The value is a reference to a type_info object that represents either the type-id or the type of the expression, depending on which form of typeid is used. For more information, see type_info Class. Web🔌Power Specs - Output Max: 65w ~ 20v 3.25a Compatible 45W~ 20v 2.25a.Input Volt Range: 110-240v Wattage: 65w Max;Plug Type: USB C Type C Port; Condition: 100% New. … cities in pitt county north carolina