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The actual items being duplicated are given control over the cloning process. The fist category in ruby on rails design patterns is Creational Patterns. These patterns provide an object creation mechanism that increases flexibility and reuse of existing code. The Factory pattern is a creational design pattern that provides an interface for creating objects but allows subclasses to alter the type of objects that will be created. This pattern is useful when you want to abstract object creation and make it more flexible.
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The Command pattern is a behavioral design pattern that encapsulates a request as an object, thereby allowing for parameterization of clients with queues, requests, and operations. It is useful when you want to decouple senders from receivers, supporting undoable operations and queuing requests. This pattern is useful for implementing event handling systems and decoupling components in an application. Using design patterns enables developers to write more robust and modular code, promoting code reuse and simplifying maintenance. However, it's important to note that design patterns are not always the best solution for every problem. The choice of the right pattern depends on the specific nature of the problem to be solved and the project's requirements.
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A design pattern is essentially a description or a template that can be applied to recurring situations in software design. These patterns offer a standardized approach to solving specific problems, helping programmers write more readable, maintainable, and efficient code. In other words, patterns represent best practices and accumulated experiences in the field of software design. Last on the list of Ruby Design pattern is Structural Design patterns. These design pattern helps in maintaining these structures adaptable and effective, it also describe how to combine items and classes into a bigger structure.
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The open-closed principle
As a commonly used definition, "every class should have only one reason to change". Provides a simplified interface to a library, a framework, or any other complex set of classes. Lets you attach new behaviors to objects by placing these objects inside special wrapper objects that contain the behaviors. Our typical weekend event rentals begin at 2pm on Thursday and the rental items are due back before 5pm on Monday. If the event occurs during the week, lengths of rentals vary by the event. So many times the event planners and special guests themselves don’t have the time or expertise.
Lets you fit more objects into the available amount of RAM by sharing common parts of state between multiple objects instead of keeping all of the data in each object. Lets you split a large class or a set of closely related classes into two separate hierarchies—abstraction and implementation—which can be developed independently of each other. We work on everything from weddings to corporate events, birthdays to celebrations of life.
Ruby notices bioluminescent suction cups on her fingers and hides in the library. To her confusion and horror, she transforms into a giant kraken and accidentally destroys the library after being startled by the librarian. Abstraction is a high-level control layer for something and is also referred to as an interface. The implementation layer should be assigned the task (also called the platform).
These operations are carried out on a builder object to generate an object. You are limited to calling the steps required to produce a specific configuration of an object. Some construction processes may require distinct implementations when building alternative representations of the product. Through their abstract interface, client code only interacts with factories and products. As a result, the client code can use every product created using a factory object. The client code is given a new concrete factory class that you created.
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You can make your code more efficient and easier to maintain and extend with the right design pattern. Programs may support enormous numbers of objects because of this structural design pattern, which keeps memory usage to a minimum. The pattern can accomplish this by dividing the object state among several objects.
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A behavioral design pattern called Chain of Responsibility, often called Chain of Command or CoR enables you to transfer requests along a chain of handlers. Each Handler chooses whether to execute a request or pass it on to the Handler behind it in the chain. The approach enables several objects to respond to requests without the sender class becoming dependent on the receivers’ concrete classes. Any handler that adheres to a common handler protocol can dynamically assemble the chain at runtime. In Ruby, the concept of a chain of responsibility is rather frequent; it mainly applies when your code uses object chains, such as event chains, filters, and others. Creating complete product families without identifying their concrete classes is a challenge that the creational design pattern known as Abstract Factory addresses.
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