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Joined: 23/11/2008(UTC)
Posts: 523
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Run Time Type Information (RTTI) in C++ Why RTTI?Up-casting (treating sub-class as base class ) works fine, for example, Code:Animal * animal = new Dog();
However, down-casting might not be safe as correctness cannot be determined by the C++ compiler. See the following example. Code:Dog * dog = (Dog*) animal;
So we need RTTI to support both up-casting and down-casting. Mechanisms for RTTI1. dynamic_cast operator 2. typeid operator and type_info class See details of dynamic_cast operator here. RTTI typeid operator- Obtains type info of an object/expression which is a reference to a standard library type called type_info. - Usage: typeid( object) - The usage is similar to "sizeof". - To get the name of the type, use typeid(object).name(). Edited by user Thursday, 4 July 2013 9:04:30 AM(UTC)
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