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README.md

layout pattern
title Double Dispatch
folder double-dispatch
permalink /patterns/double-dispatch/
pumlid NSbB3iCW303HgpG70Ezx6yTOWSeOv4zp_MRTtUZDCPGa6wV9gqTiVmCOtlKQqVDCPwEbmHgLreGXUMEWmGU_M1hxkBHiZ61JXud-1BILft1fmvz37JZetshQh3kd_000
categories Other
tags
Java
Difficulty-Intermediate
Idiom

Intent

Double Dispatch pattern is a way to create maintainable dynamic behavior based on receiver and parameter types.

alt text

Applicability

Use the Double Dispatch pattern when

  • the dynamic behavior is not defined only based on receiving object's type but also on the receiving method's parameter type.

Real world examples