LSP — The Liskov Substitution Principle

The Liskov Substitution Principle is a part of SOLID, a mnemonic acronym that bundles a total of 5 design principles.

It is often associated with clean code.

But what exactly is it, is it important to you, and should you even care?

What does it state?

If S is a subtype of T, then objects of type T may be…