What’s the Liskov Substitution Principle?
Get a brief introduction to the Liskov substitution principle.
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The Liskov substitution principle was initially introduced by Barbara Liskov, an American computer scientist, in 1987. The principle states that if you substitute a parent with any of its derived classes, the behavior of the program shouldn’t change.
This principle was introduced specifically with inheritance in mind, which is an integral feature of object-oriented programming. Inheritance allows us ...