Dynamic Dispatch
Dynamic dispatch is a programming language feature that determines which method or function to execute at runtime based on the actual type of an object, rather than its declared type. It is a core mechanism in object-oriented programming that enables polymorphism, allowing different objects to respond to the same method call in different ways. This is typically implemented through virtual method tables (vtables) in languages like C++ and Java, or similar mechanisms in other languages.
Developers should learn dynamic dispatch to implement polymorphism effectively, which is essential for writing flexible, maintainable, and extensible code in object-oriented systems. It is used in scenarios such as designing frameworks with pluggable components, implementing design patterns like Strategy or Observer, and handling heterogeneous collections of objects where behavior varies by type. Understanding dynamic dispatch helps avoid rigid, type-specific code and supports better software architecture.