Run-time type information can be used to determine: An object's type. The number of arguments a function takes. A function's argument type. A function's return type.
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The Deep Dive
Run-time type information (RTTI) is like a magical detective that helps programmers find out what type an object is during the execution of a program. This is particularly useful in languages like C++ and Java, where you can have object-oriented design with polymorphism, allowing you to dynamically determine the actual object type being pointed to or referenced at any moment. It's like getting a sneak peek into the identity of an object when you need to make decisions based on its true nature! On a practical level, RTTI is extremely useful in scenarios like implementing complex systems with inheritance hierarchies. For example, when dealing with a collection of base class pointers that could point to different derived class objects, RTTI helps you safely cast and call derived class methods. Without it, you’d be fumbling in the dark, but with RTTI, it’s like having a flashlight in the world of object-oriented programming!