💡 Clean code is not about being clever. It’s about being understood. As developers, we often fall into a trap: We think “best practice” means using the newest syntax, chaining more methods, or writing code that looks advanced. But here’s the reality 👇 Two pieces of code can: • Solve the same problem • Have the same time complexity (O(n)) • Deliver identical performance Yet one is clearly better. Why? Because someone else will read your code. Your teammate. Your future self. A new hire onboarding into your project. And when that moment comes, clarity beats cleverness every single time. Writing complex code when a simpler version exists isn’t innovation, it’s friction. 👉 Best practice is not about showing how much you know. 👉 It’s about making sure others don’t struggle to understand it. Great developers don’t just write code that works. They write code that communicates. Because in the end: 🧠 Code is read far more than it is written. #CleanCode #SoftwareEngineering #BestPractices #WebDevelopment #Programming
It is important to say that we don’t need to chain maps or filters when we are using reduce because it is possible to apply all the logic in the reduce callback. In that case, you could add the object to the acc if the number is even, then return it.
Code readability is relative, which is exactly what makes it so complex. This is why the best code is always the well-documented one. On the other hand, array efficiency remains a major topic of debate. For small arrays, micro-optimization is rarely necessary, as the client-server latency is a much larger bottleneck. However, for large arrays, many developers simply rely on AI to generate code, a practice that likely ends up costing many corporations in the long run.
YOU ARE MISSING THE POINT The first approach is mutable, the second is immutable. The first approach is more error prone. If performance is not your bottle neck, I would go with the second because it will be less likely to have bugs. But, if you work on a big company that have a lot of layers of quality and they will catch a bug if you mess up, then the first one is easier to write and read.
You are 50% right. You are giving a simple example how to create an array of even numbers. But if you can give us a complex example with many operations to extract a specific result, the left side solution will be a mess and the right side one will be more clear and efficient.. Every solution depends of the complexity of the initial problem 😀 Another imprtant point : the left solution is not clear and not meaningful. Yu are looping in a code with idexes and conditions... it's the old procedural programming. The modern way is based on functional programming whith operations and functions, filters: it's more clear. Maybe less performant!
Be careful about what type information you post this type of information may mislead non technical people. One have naive sequential pattern the other have encapsulation for efficiency Another typical mistake from juniors is to build an iterative "search algorithm with breakers" (slower) instead of using the native encapsulation methods (with better benchmarks)
With a functional approach could also be written like this: const getEvenNumbers = (arr) => arr .reduce((acc, value) => { if(value %2 === 0){ acc.push(value); } return acc; }, []);
If you already know what map, filter and reduce functions do then the complex implementation is more readable. Btw you don't to use map and reduce at all if your goal is to filter out odd numbers.
What the heck is going on with this code? There are a couple of mistakes that you should fix before you click the "publish" button!
I think you purposely made the complex example really "complex". These are not really good examples. Just use filter then it becomes much simpler than the for loop.