Below steps will show you how to use a design pattern after selecting one of them for solving a problem. Read the pattern once through for a overview: Give importance to the applicability and consequences sections to ensure that the pattern is right for your problem. Study the structure, participants and collaborations sections: […]
In this article we will learn about the approaches that can be used for how to select a design pattern. As there are 23 patterns in the catalog it will be difficult to choose a design pattern. It might become hard to find the design pattern that solves our problem, especially if the catalog […]
In this article we will learn about organizing the catalog of design patterns which basically provides a classification of them. Design patterns vary in their granularity and level of abstraction. As there are many design patterns, we can organize or classify patterns to learn them faster. Here we classify the patterns along two dimensions: […]
The catalog of design patterns (Gang-of-Four patterns) contains 23 design patterns. They are listed below: Abstract Factory Provides an interface for creating families of related or dependent objects without specifying their concrete classes. Adapter Adapter lets classes work together that couldn’t otherwise because of incompatible interfaces. Bridge Decouple (separate) the abstraction from […]
In this article we will learn about describing design patterns. The information in a design pattern’s documentation will be described as follows: Pattern name and classification The pattern name specifies the essence of the pattern precisely. A good name is a key as it will become a part of our design vocabulary. Classification specifies […]