June 2018
Intermediate to advanced
280 pages
7h 46m
English
Content preview from Design Patterns and Best Practices in Java
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Liskov Substitution Principle
Barbara Liskov states that, Derived types must be completely substitutable for their base types. The Liskov Substitution Principle (LSP) is strongly related to subtyping polymorphism. Based on subtyping polymorphism in an object-oriented language, a derived object can be substituted with its parent type. For example, if we have a Car object, it can be used in the code as a Vehicle.
The LSP states that, when designing the modules and classes, we must make sure that the derived types are substitutable from a behavior point of view. When the derived type is substituted with its supertype, the rest of the code will operate with it as it is the subtype. From this point of view, the derived type should behave as its ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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