Dry kiss yagni12/31/2023 Good software can evolve into what it will ultimately become. Build what you need as you need it, aggressively refactoring as you go along don't spend a lot of time planning for grandiose, unknown future scenarios. To combat this urge, I suggest following the YAGNI ( You Aren't Gonna Need It) doctrine. ![]() ![]() I think it should be the other way around: these techniques are guilty until proven innocent in the court of KISS.Īs developers, I think we also tend to be far too optimistic in assessing the generality of our own solutions, and thus we end up building elaborate OOP frameworks around things that may not justify that level of complexity. Most programmers never met an object they didn't like. You laugh, but like Rico, I see this all the time. Use fancy OOP features because they have specific, demonstrable benefit to the problem you're trying to solve. So when I say things like "don't use a delegates if regular polymorphism would do" I don't mean that you should avoid delegates I mean that you should not use them if they are overkill.ĭon't use fancy OOP features just because you can. Whatever programming religion you may have I think you'll agree that more complex language abstractions do not inherently help your design – rather each more sophisticated feature starts at a net negative and must somehow earn its way to positiveness with benefits such as clarity, ease of maintenance, performance, and so forth. But, as often, I find that people have written their code in some elaborate way when a much simpler model would have been equally servicable and more performant. Far from it, often they not only add clarity and maintainability they also improve performance. This is not to say that you should shun virtual functions, inheritance, or other features of modern programming languages. If I was to summarize my advice in that blog in a few words it would be "don't use OOP features that you don't need." I hardly think that one can make any conclusions about which vendor has the edge in performance from my article on Performance Tidbits. Add your code logic for the present, don't think of what may be needed in the future.Microsoft performance guy Rico touches on a topic near and dear to my heart Don't add anything if you think will need it. YAGNI says- do not add any functionality until it's deemed necessary in other words, write the code which you need in the current situation. XP is generally used in the Agile software development process. You are not going to need it, or YAGNI is a principle of extreme programming. Now, you have to decide which one is clearer. These principles are widely recognized as good guidance for object-oriented programming, but they can be applied equally. if ((day 7)) throw new InvalidOperationException( "day must be in range 1 to 7" ).throw new InvalidOperationException( "day must be in range 1 to 7" ).It will not only be easier to read and maintain but also can find bugs a lot faster. You aren’t gonna need it (YAGNI) As developers, we sometimes try to think a bit further than we should and add additional features to the code just in case we need them in the future or we. If you have a lot of conditions in the method, break these out into smaller methods. Keep your methods small, each method should never be more than 40-50 lines.Įach method should only solve one small problem, not many use cases. As programmers, we strive to write clean, maintainable, and scalable code that not only solves the current problem but also stands the test of time. Don’t write lengthy methods, divide logic into smaller reusable pieces as much as possible and try to use the existing piece in your method.Įnterprise libraries, helper class, every piece of code is unique in the libraries and helper classes.Ī big guy said: The programming language is for humans to understand, computers can only understand 0 1, so keep coding simple and straight, which should be easily understandable by human beings. What is it DRY, KISS & YAGNI Principles Boris Bodin Follow Published in Scub-Lab 12 min read Sep 19 In the fast-paced world of software development, efficiency and quality are paramount. To achieve, divide your system into pieces. ![]() Violations of DRY: "we enjoy typing" or "waste everyone's time “. The DRY principle is stated as "Every piece of knowledge must have a single, unambiguous, representation within a system “. ![]()
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