What Do You Mean By Design Pattern?

What is a design pattern: Patterns are solutions to common software design problems? Knowing these patterns distinguishes a professional programmer from ordinary programmers. No matter what programming language you write in, knowing and using these templates in software design can help you a lot in creating software. So, we advise you not to miss the continuation of this study in any way.
What is a pattern design?
Over time, programmers have encountered various problems in software development. Many of these problems were independent of programming languages and the like. So, to solve these problems, various solutions were the best way to resolve these problems, design patterns or Design Pattern say. In other words, sets of the best solutions to common problems in the software programming process are called design patterns. Pattern designs are developed by experienced programmers to solve common problems in object-oriented programming.
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Design patterns are not part of software architectures and only provide the correct way of object-oriented coding. Therefore, these templates only enter the realm of object-oriented coding and are independent of programming languages.
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History Of Design Patterns
Design patterns were first introduced by Christopher Alexander. Christoph Alexander referred to design patterns as solutions to problems that commonly occur in the programming process. In 1994, a group called the Gang of Four, consisting of Eric Gamma, Richard Helm, Ralph Johnson, and the Wilsides Cup, categorized design patterns by application. The Gang of Four, or GOF for short, published these patterns in a book called Design Patterns. This book divides 23 of the design patterns into three general categories and introduces and teaches them.
In this book, Gamma and his colleagues have considered a specific structure to introduce each of the design patterns. They have refused to introduce design patterns visually. Because they believed that the introduction of design patterns required a new and specific structure. Therefore, they designed the following structure in order to better present the design of the patterns. The main components of this structure are:
• Name and classification: state the name of the template and a short description of it.
• Purpose: In this section, a brief description of the purpose of the template is provided.
• Another name: If the design pattern is known by other names, they are introduced in this section.
• Solution: This section deals with a scenario in which a design pattern is used and how to use classes and objects to solve the problem.
• Application: This section describes the conditions under which the model will be used.
• Structure: In this section, the main structure of design patterns using UML is displayed.
• Classes and objects used: The responsibilities of the classes or objects used in the design template are written in this section.
• How to Collaborate: This section describes how classes and objects work together.
• Implementation method: In this section, the implementation steps are discussed.
• Sample Code: In this section, examples are shown in the form of programming languages.
• Practical examples: In this section, practical examples of the design pattern are mentioned.
• Relationship between design pattern and other patterns: Related sections Design pattern with other patterns are examined in this section.
Types Of Design Patterns In Software Engineering
Design patterns are divided into three general categories, Creational Design Patterns, Structural Design Patterns, and Behavioral Design Patterns, according to the applications and purposes presented for that purpose.
The Models Are Designed Producer (Creational Design Patterns)
The design patterns to solve problems related to the creation of objects in an application are presented, the models are the manufacturer's design or Creational say. The most common design patterns are:
• Singleton
• Factory Method
• Prototype
• Abstract Factory
• Builder
• Object Pool
Structural Design Patterns
Structural design patterns are a set of solutions that help programmers solve software scalability problems. These design patterns are used to manage the relationship between classes and objects. These design patterns are:
• Adapter
• Decorator
• Facade
• Bridge
• Composite
• Flyweight
• Proxy
Behavioral Design Patterns
Behavioral design patterns are a set of coding strategies related to the interaction and communication of objects. These design patterns are:
• Chain of responsibility
• Strategy
• Iterator
• Command
• Mediator
• Memento
• Observer
• State
• Template Method
• Real Targeted Visitor
Advantages of using software design templates
One can look at the design of patterns with the view that using them is, in fact, benefiting from the experience and expertise of the best object-oriented programmers in the coding process. Some believe that problems such as overuse of classes, poor design, and. Are among the fundamental problems of object-oriented programming. Pattern designs provide many benefits to programmers by properly understanding the principles of object-oriented programming. Among the most important benefits of using them can be mentioned the following:
• Increase scalability
• Expandability
• Increase flexibility
• Speed up software development
• Reduce errors and problems
• Reduce coding rate
When And Where Should We Use Design Patterns?
Knowing when and where to use design templates is one of the most common questions asked by programmers. Since each design pattern is provided for a specific application and to solve a specific problem in the programming process, we must be able to identify those problems during software development. After identifying and diagnosing such problems, we need to learn how to use the design patterns provided to solve them so that we can use them.
Conclusion
Understanding the concepts of design patterns is a must for all programmers. Because design templates are provided with the aim of solving common coding problems and standardizing the software development process. Using design templates, programmers are able to build flexible, scalable, and scalable software that is designed to be principled. Have you ever used design patterns? What do you think is the most important advantage of using design patterns in object-oriented coding?
• Article guide and table of contents
• What is a pattern design?
• History of design patterns
• Types of design patterns in software engineering
• Advantages of using software design templates
• When and where should we use design patterns?
• Conclusion
• Show more ...
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