Why do you think writing clean code is important ?
1. Your teammates will thank you
If you've ever worked in a team with many devs you know that sometimes you need to modify or fix a feature coded by someone else. Isn't it great when that code is nice and clean?
Working in a team is a wonderful thing. You get to share knowledge and passions with other people and there's always lots of learning involved. But when it comes to code we all have our ways and we probably approach problems differently. Clean code makes it easier for your coworkers to understand your approach.
2. Think about your future self
So, what if I work alone? Or what if I hate my coworkers and I want to see them suffer?
Clean code is not valuable only for your team, but for your future self as well! It may be you who has to modify or fix some old feature developed by yourself. And believe me, you will be equally (or even more) happy to have nice and understandable code written by yourself to work with.
3. Messy code tends to get messier
Once you approach a solution ignoring clean code practices and just throwing anything that works in, there's no going back without refactoring the whole code. You may have to leave it there to move on to the next feature and avoid delays, sure. But eventually you'll have to go back to fix some bugs or modify something, and then you'll be faced with two options:
- Spend some extra time refactoring the old code
- Keep working in the mess
If you go with the first option you'll solve the issue, but you'll get delayed, and your team probably can't afford the delay. That's why messy code tends to get messier. You'll be forced to go with the second option and make the mess even worst again and again until someone decides that taking the first option is worth the delay (which may never happen).
Wouldn't it have been better to write clean code in the first place?
Also, the messier your code becomes, the harder it gets to get it cleaned up. Messy code could corrode your project little by little until it ruins it entirely.
4. Faster decision making
When you're following clean code principles it's easier to make decisions like:
- How should I name this property?
- What comment style should I use?
That's because clean code is based in standards and conventions that define a bunch of stuff so you don't have to!
Every mayor programming language has its own set of standards and conventions defined by their creators and communities that exist to make everyone's life a little easier. I highly recommend looking up those conventions for every programming language you use.
5. Reduce repeated code
Writing clean code means following naming conventions (among other things). These conventions help you choose descriptive names for your classes, variables, functions, etc. Even files need to be correctly named!
When all your code has descriptive and intuitive names it's easier to find what you're looking for. Need a way to get all unread messages? Try MessageService.GetUnread(). You'll have a hard time find it if the method it's called ArrayOfUnreadMessages() instead.
Bad naming could lead to:
- Best case scenario: Wasted time searching for stuff.
- Worst case scenario: Repeated code with a different name: You couldn't find ArrayOfUnreadMessages(), so you created UnreadArray(). They both do the same thing, and they both have horrible names.
6. It feels great!
You know that feeling when you clean up your desk and everything is where it needs to be, and you just want to take a pic and upload it to whatever social media you use? Well, that's how writing clean code feels like. Try it!