inheritence

Do you REALLY know what SOLID principles means? Think again! (#3: Exclusive Truth about Liskov Substitution Principle)

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Liskov Substitution Principle

Liskov Substitution Formal definition of Liskov substitution principle is –Let φ(x) be a property provable about objects x of type T. Then φ(y) should also be true for objects y of type S where S is a sub-type of T. Or we can say – If class A is a sub-type of class B, then … Read more

Do you REALLY know what SOLID principles means? (#2: Exclusive Truth about Open Closed Principle)

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open closed principle

Open for Extension, Closed for Modification The Open Closed Principle is a popular software design principle that states that classes should be open for extension, but closed for modification. This means that we should be able to add new functionality to a class without modifying the existing code for that class. The reason for this … Read more

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