Introduction to the Design Patterns

What are design patterns?

Designing efficient and reusable code is something that all developers strive for. When working on large applications, code structure becomes an integral element where we need to prevent repeating code for similar tasks. However, trying to build upon and adding features to an existing system is quite a challenging task, since a developer needs to know the complete particulars. These include the relationships that each entity possesses or the sort of hierarchy that exists between different entities. Also, developers need to update their code in such a way as to make it easily adaptable to change in the future. In such scenarios, it’ll be helpful to have a structure that could be used to solve various common issues. This is where the design patterns come into play.

Design patterns are solutions to frequently occurring real-life problems in software design. They can also be considered customizable templates that can meet the requirements of a particular design problem. Let’s take the example of an ice-cream factory that serves as the base of operations to produce various types of ice creams according to the defined requirements. This is similar to how a design pattern can be used as a template in different circumstances.