Design Patterns -- part 1

Design patterns are the best practices used by Developers while working on project. These give design level solutions for recurring problems that software engineers come across often. This helps developers to tackle these problems and design a solution well using patterns. These patterns help other developers so that they do not need to waste time in those problems which were faced by those developers. 

What is Gang Of Four (GOF)?

There is a band called Gang Of Four (band) but here we will not be talking about band. We will talk about the authors of Gang of Four design patterns. In 1994, four authors Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides published a book titled Design Patterns - Elements of Reusable Object-Oriented Software

Source: Wikipedia

Patterns are formalized best practices that the programmer can use to solve common problems when designing an application or system. Object-oriented design patterns typically show relationships and interactions between classes or objects, without specifying the final application classes or objects that are involved. Patterns that imply mutable state may be unsuited for functional programming languages, some patterns can be rendered unnecessary in languages that have built-in support for solving the problem they are trying to solve, and object-oriented patterns are not necessarily suitable for non-object-oriented languages.


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