Quick Answer: How Do You Describe A Design Pattern?

What are the 23 design patterns?

The 23 Gang of Four Design PatternsStrategy: Defines a family of algorithms, encapsulates each one, and make them interchangeable.

Decorator: Attach additional responsibilities to an object dynamically.

Factory Method.

Observer.

Chain of Responsibility.

Singleton.

Flyweight.

Adapter.More items….

What are the benefits of design pattern?

Benefits of Design PatternsPatterns don’t provide solutions, they inspire solutions.Patterns explicitly capture expert knowledge and design tradeoffs and make this expertise widely available.Ease the transition to object-oriented technology.

What pattern means?

(Entry 1 of 2) 1 : the form or figures used in decoration : design The cloth has a fancy pattern. 2 : a model or guide for making something Mom used a pattern to make the dress. 3 : the regular and repeated way in which something is done Their behavior has fallen into a pattern.

The Most Important Design PatternsFactory Method. A normal factory produces goods; a software factory produces objects. … Strategy. … Observer. … Builder. … Adapter. … State.

How do you classify patterns?

Ways to group (classify) patterns according to their traits, such as:symmetry (for example, seventeen planar symmetry types)layout type (diamond, drop, gradation, grid, spot, etc.)layout arrangement (allover, foulard, etc.)pattern directions (one-way, two-way, undirectional, etc.)More items…

What is design pattern with example?

Design patterns provide a standard terminology and are specific to particular scenario. For example, a singleton design pattern signifies use of single object so all developers familiar with single design pattern will make use of single object and they can tell each other that program is following a singleton pattern.

What are the key elements in the description of a design pattern?

Elements of Design Patterns Pattern name: increases vocabulary of designers. Problem: intent, context, when to apply. Solution: UML-like structure, abstract code. Consequences: results and tradeoffs.

What are the different types of design patterns?

Types of design patternsCreational: These patterns are designed for class instantiation. … Structural: These patterns are designed with regard to a class’s structure and composition. … Behavioral: These patterns are designed depending on how one class communicates with others.

What are the examples of pattern?

Nature provides examples of many kinds of pattern, including symmetries, trees and other structures with a fractal dimension, spirals, meanders, waves, foams, tilings, cracks and stripes.

How do I choose a design pattern?

How to select a design patternConsider how design patterns solve design problems: … Scan intent sections: … Study how patterns interrelate: … Study patterns of like purpose: … Examine a cause of redesign: … Consider what should be variable in your design:

What are the 5 OOP principles?

The Open-Closed Principle. The Liskov Substitution Principle. The Interface Segregation Principle. The Dependency Inversion Principle.

What are the three types of design?

I tend to divide design into three main types: product, interface, and visual.Product Design. … Interface Design. … Visual Design. … Interrelation of types.