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Grokking the Low Level Design Interview Using OOD Principles

SOLID: Liskov Substitution Principle

Explore the Liskov Substitution Principle to understand how subclasses should be replaceable for their superclasses without breaking functionality. This lesson helps you identify violations and fix them in class hierarchy designs, improving code maintainability and system stability.

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Introduction

The Liskov Substitution Principle (LSP) is one of the fundamental design principles of object-oriented design. The LSP helps guide the use of inheritance in design so that the application does not break. It states that the objects of a subclass should behave the same way as the objects of the superclass, such that they are replaceable. This ...