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Frequently Asked Questions

What are the different design patterns?

These design patterns are all about class instantiation or object creation. These patterns can be further categorized into Class-creational patterns and object-creational patterns. While class-creation patterns use inheritance effectively in the instantiation process, object-creation patterns use delegation effectively to get the job done.

How to choose the right design pattern?

Design patterns are meant for common problem-solving. Whenever there is a need, you have to implement a suitable pattern to avoid such problems in the future. To find out which pattern to use, you just have to try to understand the design patterns and their purposes. Only by doing that, you will be able to pick the right one.

What are software design patterns in software engineering?

Software Design Patterns. Last Updated : 31 Aug, 2018. Design patterns are used to represent some of the best practices adapted by experienced object-oriented software developers. A design pattern systematically names, motivates, and explains a general design that addresses a recurring design problem in object-oriented systems.

What is a factory pattern in programming?

A factory pattern is one of the core design principles to create an object, allowing clients to create objects of a library (explained below) in a way such that it doesn’t have tight coupling with the class hierarchy of the library. What is meant when we talk about libraries and clients?

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