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What are the best practices for implementing the YAGNI principle in your code?

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You've probably heard of the YAGNI principle, which stands for "You Aren't Gonna Need It". It's a guideline for software development that encourages you to avoid adding unnecessary features or complexity to your code until you actually need them. But how do you apply this principle in practice, especially when you're working on web applications? In this article, we'll share some best practices for implementing the YAGNI principle in your code, and how it can help you improve your performance, quality, and maintainability.

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Yuvaraj Madheswaran

GM Financial
Muhammad Ahsan Malik

Software Engineer | Co-Founder Adorika.Pk | Turing Pre-Vetted | Well-versed in C# - dotNET, Python - Django, and…
Muhammad Owais

? Frontend Developer ? Learning New Skills ? #open to work

1 Start with the MVP

The first step to follow the YAGNI principle is to define the minimum viable product (MVP) for your web application. The MVP is the smallest version of your product that can deliver value to your users and meet your business goals. By focusing on the MVP, you can avoid wasting time and resources on features that are not essential or validated by your customers. You can also get feedback faster and iterate on your product based on real data.

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Muhammad Ahsan Malik

Software Engineer | Co-Founder Adorika.Pk | Turing Pre-Vetted | Well-versed in C# - dotNET, Python - Django, and JavaScript - Next.js
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Implementing YAGNI (You Ain't Gonna Need It) in your code involves starting with simplicity, only adding what's essential now, and avoiding unnecessary complexity. Regularly review and trim unused code.

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2 Refactor your code regularly

The second step to follow the YAGNI principle is to refactor your code regularly. Refactoring is the process of improving the structure, readability, and design of your code without changing its functionality. By refactoring your code, you can remove any unnecessary or redundant code, simplify your logic, and make your code easier to understand and modify. Refactoring can also help you identify and fix any bugs, performance issues, or security vulnerabilities in your code.

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3 Use abstractions wisely

The third step to follow the YAGNI principle is to use abstractions wisely. Abstractions are ways of hiding the details or complexity of your code behind simpler interfaces or concepts. For example, you can use frameworks, libraries, or design patterns to abstract away some of the low-level or common tasks in your web application. However, abstractions can also introduce overhead, dependencies, or limitations to your code. Therefore, you should only use abstractions when they add value, clarity, or flexibility to your code, and not just for the sake of using them.

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Muhammad Owais

? Frontend Developer ? Learning New Skills ? #open to work
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In adhering to the YAGNI (You Aren't Gonna Need It) principle, the third step emphasizes the judicious use of abstractions. While abstractions, like frameworks, libraries, or design patterns, can simplify code by hiding details or complexity, they may introduce overhead, dependencies, or limitations. Wise use of abstractions entails incorporating them only when they genuinely contribute value, clarity, or flexibility to your code, rather than employing them indiscriminately for the sake of doing so.

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4 Write tests for your code

The fourth step to follow the YAGNI principle is to write tests for your code. Tests are pieces of code that check if your code works as expected and meets the requirements. By writing tests, you can ensure that your code is correct, reliable, and consistent. You can also prevent any regressions or errors when you make changes to your code. Tests can also help you follow the YAGNI principle by forcing you to write clear and testable code, and by avoiding any unnecessary or untested code.

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Imran Yasin

Software Engineer | JavaScript | React.js | Next.js | Redux | Firebase | Google GCP | NoSQL | MongoDB | Serverless | Cloud functions
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Writing tests before writing code is a practice called Test Driven Development (TDD). This approach can help ensure that the code is testable, meets requirements, and is more maintainable. With TDD, you create test cases before writing the actual code, and then write the code to pass those tests.

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5 Review your code with others

The fifth step to follow the YAGNI principle is to review your code with others. Code review is the practice of having someone else check your code for quality, functionality, and style. By reviewing your code with others, you can get feedback, suggestions, and insights from different perspectives and experiences. You can also learn from others and improve your skills and knowledge. Code review can also help you follow the YAGNI principle by exposing any unnecessary or complex code, and by encouraging you to write simple and clean code.

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Yuvaraj Madheswaran

GM Financial
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Promotes Collaboration: Encouraging code reviews fosters a collaborative environment where team members can collectively contribute to the improvement of code quality. Diverse Perspectives: In a team, individuals bring diverse perspectives and experiences. Code reviews harness this diversity to identify potential areas for improvement and catch unforeseen issues. Learning Opportunity: Code reviews serve as a valuable learning opportunity. Error Detection: Having multiple sets of eyes on the code helps in detecting errors or bugs that might have been overlooked during individual development. This aligns with the YAGNI principle by ensuring that the codebase remains free from unnecessary complexities.

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6 Ask yourself why

The sixth and final step to follow the YAGNI principle is to ask yourself why. Whenever you're writing or adding code to your web application, you should ask yourself why you're doing it, and what value it brings to your product and your users. You should also ask yourself if you really need it, or if you can achieve the same result with less or existing code. By asking yourself why, you can avoid adding code that is not needed, not useful, or not relevant to your web application.

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7 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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What are the best practices for implementing the YAGNI principle in your code?

1

2

3

4

5

6

7

1 Start with the MVP

2 Refactor your code regularly

3 Use abstractions wisely

4 Write tests for your code

5 Review your code with others

6 Ask yourself why

7 Here’s what else to consider

Web Applications

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What are the best practices for implementing the YAGNI principle in your code?

1

2

3

4

5

6

7

1 Start with the MVP

2 Refactor your code regularly

3 Use abstractions wisely

4 Write tests for your code

5 Review your code with others

6 Ask yourself why

7 Here’s what else to consider

Web Applications

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