Runtime Type Identification
Runtime Type Identification (RTTI) is a programming language feature that allows a program to determine the type of an object or variable at runtime, rather than at compile-time. It enables dynamic type checking, reflection, and polymorphism by providing mechanisms to inspect and manipulate type information during program execution. This is commonly used in object-oriented languages for tasks like casting, type-safe operations, and debugging.
Developers should learn RTTI when working in languages like C++, Java, or C# that support it, as it is essential for implementing dynamic polymorphism, safe downcasting (e.g., using 'dynamic_cast' in C++), and building flexible systems like serialization or dependency injection. It is particularly useful in scenarios where object types are not known until runtime, such as in plugin architectures, GUI frameworks, or when handling heterogeneous data collections.