Design Patterns: Crafting Solutions for Software Development Challenges
- 1. Design Pa tt erns: Cra ft ing Solu ti ons for So ft ware Development Challenges Design pa tt erns are basically de fi ned as reusable solu ti ons to the common problems that arise during so ft ware design and development. Design pa tt erns are not code, but it is a approach to tackle so ft ware problems and designing a solu ti on. © yuj designs pvt. ltd. 1
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- 3. Each and every developer use design pa tt erns one or other way the design pa tt ern solve the large problem very easily. If we learn design pa tt erns we can easily iden ti fy risk of mul ti -level approaches you have to fi nd be tt er solu ti ons and when designing complete so ft ware you need to take into the account that. Crea ti onal Design Pa tt erns: How do those objects going to be instan ti ated/created? Structural Design Pa tt erns: How do those objects combine with other object and formalise bigger en ti ty? which should also be scalable in future. Behavioural Design Pa tt erns: You also need to think in terms of communica ti on between those objects which can an ti cipate future changes easily and with fewer side e ff ects. Answering all these Ques ti ons help us to think in terms of object everywhere considering maintainability, scalability, expressiveness and stability. Which create our mindset of coding. Types of Design Pa tt erns Crea ti onal Design Pa tt erns : In Crea ti onal design pa tt erns abstract the instan ti a ti on process. They help make a system independent of how its objects are created, composed, and represented. © yuj designs pvt. ltd. 3
- 4. Factory : Creates an instance of several derived classes Builder : Separates object construc ti on from its representa ti on Prototype : A fully ini ti alized instance to be copied or cloned Singleton : A class of which only a single instance can exist © yuj designs pvt. ltd. 4
- 5. Structural Design Pa tt erns: In Structural design pa tt erns help us to iden ti fying a simple way to realise rela ti onships between en ti ti es. Adapter : Match interfaces of di ff erent classes Decorator : Add responsibili ti es to objects dynamically Flyweight : A fi ne-grained instance used for e ffi cient sharing Proxy : An object represen ti ng another object Facade : A single class that represents an en ti re subsystem © yuj designs pvt. ltd. 5
- 6. Behavioural Design Pa tt erns : In Behavioural design pa tt erns help us to iden ti fy common communica ti on pa tt erns between objects and realise these pa tt erns. This pa tt erns increase fl exibility in carrying out this communica ti on. Chain of responsibility : An approach to passing a request between a chain of objects. Command : Data-driven behavioural pa tt ern, which encapsulates all the informa ti on that is required for performing a “command” or ac ti on, or to trigger an event at a later ti me. © yuj designs pvt. ltd. 6
- 7. Interpreter : Using this design pa tt ern we can incorporate language elements in programs. Mediator : Simpli fi es the communica ti on between objects. Null Object : This design pa tt ern is to create a null object that encapsulates the absence of an object. Design pa tt erns are the results of experience, hard work and a great number of trials and errors. They also represent considered and best prac ti ces of object-oriented programming (SOLID, DRY, KISS and YAGNI) Understanding and applying design pa tt erns not only enhances so ft ware development prac ti ces but also fosters a mindset of e ffi cient problem-solving and code maintainability. Leveraging crea ti onal, structural, and behavioral design pa tt erns enables developers at UX Design Studio to cra ft scalable, expressive, and stable solu ti ons, ensuring op ti mal user experiences across all projects. © yuj designs pvt. ltd. 7