Titlebook: Design Patterns in Modern C++20; Reusable Approaches Dmitri Nesteruk Book 2022Latest edition Dmitri Nesteruk 2022 C++.C plus plus.Cpp.desi

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Pamela S. Soltis,Douglas E. SoltisThe Singleton is the most hated design pattern in the (rather limited) history of design patterns. Just stating that, however, doesn‘t mean you shouldn‘t use the singleton: a toilet brush is not the most pleasant device either, but sometimes it‘s simply necessary.

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E. Fischer,W. Barthlott,R. Seine,I. TheisenA Flyweight (also sometimes called a . or a .) is a temporary component which acts as a “smart reference” to something. Typically, flyweights are used in situations where you have a very large number of very similar objects, and you want to minimize the amount of memory that is dedicated to storing all these values.

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A. L. Weitzman,K. Kubitzki,P. F. StevensWhen we looked at the Decorator design pattern, we saw the different ways of enhancing the functionality of an object. The Proxy design pattern is similar, but its goal is to preserve exactly (or as closely as possible) the API that is being used while offering certain internal enhancements.

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BuilderThe Builder pattern is concerned with the creation of . objects, that is, objects that cannot be built up in a single-line constructor call. These types of objects may themselves be composed of other objects and may involve less than obvious logic, necessitating a separate component specifically dedicated to object construction.

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