Inheritance
Inheritance is a fundamental concept in programming where a new class takes on the properties and behaviors of an existing class.
Types: Single, Multiple, Multilevel, Hierarchical, Hybrid. Key Keywords: extends, super, override, abstract.
graph LR
Center["Inheritance"]:::main
Rel_smart_contract_testing["smart-contract-testing"]:::related -.-> Center
click Rel_smart_contract_testing "/terms/smart-contract-testing"
classDef main fill:#7c3aed,stroke:#8b5cf6,stroke-width:2px,color:white,font-weight:bold,rx:5,ry:5;
classDef pre fill:#0f172a,stroke:#3b82f6,color:#94a3b8,rx:5,ry:5;
classDef child fill:#0f172a,stroke:#10b981,color:#94a3b8,rx:5,ry:5;
classDef related fill:#0f172a,stroke:#8b5cf6,stroke-dasharray: 5 5,color:#94a3b8,rx:5,ry:5;
linkStyle default stroke:#4b5563,stroke-width:2px;
🧒 Explain Like I'm 5
Imagine you have a recipe for a 'Basic Cake'. If you want to make a 'Chocolate Cake', you don't start from scratch. You just take the 'Basic Cake' recipe (Inheritance) and add chocolate to it. The Chocolate Cake 'is-a' type of Basic Cake.
🤓 Expert Deep Dive
Technically, inheritance enables 'Subtype Polymorphism'. It allows a program to treat an object of a derived class as an object of its base class. A critical concept is 'Method Overriding', where a child class provides a specific implementation of a method already defined in its parent. However, developers must be wary of the 'Diamond Problem' in multiple inheritance, where the Method Resolution Order (MRO) determines which parent's method is called. Modern design patterns often advocate for 'Interfaces' or 'Traits' over deep inheritance hierarchies to avoid tight coupling.