The reason for this, is that developers won’t realistically maintain comments.As code gets changed or refactored, chunks of code will most likely move to a different place. We’ve got version control systems for this.An example of a good comment would be a comment that contains legal information.Don’t comment about contracts, rather refer to an external document or standard license.It could sometimes be useful to provide basic information with a comment.For example, in loosely typed programming languages like PHP, you could provide basic information about a variable type in a comment.When you’re working with dates, it could be useful in some cases to type a comment about the date format that is returned by a certain method.When you’re working with multiple developers on a project, you could use a comment to warn other developers about certain consequences.To-do comments are for tasks a developer thinks should be done, but for some reason can’t be done at this moment.It could be a reminder to delete a deprecated feature or function. In summary, code comments can lead to a number of negative issues for programs. Documentation comments are intended for anyone who is likely to consume your source code, but not likely to read through it. Don’t do this. Even though there are some forms of good comments, I think that you should try to minimize the usage of comments in general.// Check to see if game is finished and player can not spawn again// Copyright (C) 2019 by Someone, Inc. All rights reserved. Sometimes, we write code and we know it’s a mess.Remember that comments do not make up for bad code. A better choice is to improve at method naming, so that your code explains itself. And most of the time it doesn’t even happen intentionally.Code changes and it changes a lot. Comments do not make up for bad code. Most coders would chuckle and move on, ignoring the code smell.There are also times when you come across a comment that is redundant. I totally agree. It's as much an art as writing the code itself; maybe even more so. thousands of freeCodeCamp study groups around the world. We have got version control, the code isn’t lost forever.Some comments that you see are just noise. Sometimes, the motivation to write comments is bad code. Donations to freeCodeCamp go toward our education initiatives, and help pay for servers, services, Sometimes, we write code and we know it’s a … We accomplish this by creating thousands of It often requires strict syntax … Some popular and well supported standards and tools include The downside of these kinds of comments is that they can make your code very “noisy” and harder to read for anyone who is actively involved in maintaining it. But you SHOULD leave a comment warning others not to pursue some seemingly obvious “better solution,” if you’ve already tried and rejected it. It’s easy to project your own worldview that code is a foreign language understood only by computers, and that you are doing the reader a service by explaining what each line does in some form of human language. It is better to clean that mess than spending time on writing comments.It takes only a few seconds to explain most of your intent in code.In many cases, it simply comes down to creating a method that says the same thing as the comment that you would write.Don’t use a comment when you can use a method or variableThere is one simple practice when it comes to commenting-out code: don’t do it.Other developers will think the code is there for a reason and won’t have the courage to delete it. But on the other hand, nothing can be quite so damaging as an old comment that contains lies or misinformation.So why is it that you should try to minimize comments in your code as much as you can?We probably wouldn’t need comments if we had programming languages that were expressive enough. It does not justify the code or provide intent. The good news is that most code editors support “code folding” which allows us to collapse the comments so we can focus on the code.Clarification comments are intended for anyone (including your future self) who may need to maintain, refactor, or extend your code.Often, a clarification comment is a code smell. They restate the obvious and serve no real purpose.A redundant comment is a comment that is not more informative than the code. Commented code is bad because when other people read the code - especially when you are stressed trying to fix a bug when the original author is away on vacation - is that it is very confusing to read the code, especially if the error is from a wrongly placed // at the start of the line... even using /* you may by accident comment something that should have been in there - or not. and staff. To-do comments can also be used to request someone else to think of a better name or to make a change that is dependent on a planned event.This was my article about using comments in your code. freeCodeCamp's open source curriculum has helped more than 40,000 people get jobs as But when you write a funny comment to make up for bad code, it actually makes people less likely to refactor and fix the code later.Do you really want to be the one responsible for robbing all future coders of the joy of reading that clever little rhyme? A failure to express ourselves. Code is rigid. No Comment: Why Commenting Code Is Still a Bad Idea. Unfortunately, the comments don’t always follow the code or simply can’t follow the code.This results in comments that get separated from the original code they describe, which makes the comments less and less accurate.You could make the point that developers should be disciplined enough to maintain the comments and keep them accurate. It is the only source of truly accurate information. He says that documenting code, while it may be necessary, isn't valuable. As Sammy Larbi said in Common Excuses Used To Comment Code, if your feel your code is too complex to understand without comments, your code is probably just bad. Tax Identification Number: 82-0779546) Not always, but often enough. // Takes a really long time to finish, only run at night. developers. Our mission: to help people learn to code for free.

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