Code Commenting Best Practices

Many developers might agree that creating computer programs resembles that of creating literature. When it comes to writing code, every one of us has our unique style. Our naming standards and problem-solving reasoning are pretty different. Nevertheless, our suggested code commenting best practices always make the coding process more accessible.

A program with high code quality always carries low technical debt. High-quality code that we can handle easily may not work for someone else, and that's okay. All we need would be to alter the comments to counteract this situation. And following specific expert suggested code commenting best practices may save our time. When the other developer takes over the project, he will comprehend and repair our code.

A simple definition of code comment?

Adding small, single-line feedback to the code as we move alongside is thought of as "code commenting." "Comments" is the period used to explain those remarks. We, the programmers, inform different builders how our software operates and what we need to gain via writing a comment.

Adding feedback does now no longer affect the software. However, they're helpful to others going via the code for the primary time.

Why are code comments important?

You're not alone if you're collaborating on the same software from start to finish. The code you write can be accessed by many other developers too. They would decipher it. The comments you input will probably help them in this process.

When a developer posts a comment hastily, it’s hard for anyone to understand what you have written. It's a terrible habit leading to worsening the situation rather than helping them.

It could be pleasant if you took the time to increase code feedback, which is informative and beneficial. Other programmers can also research faster if the function, procedure, underlying logic, and input/output are defined in code feedback. This stuff is pretty beneficial for brand new builders and know-how of the code.

Why should you never omit comments?

Several developers regard intelligible code to be a symbol of excellent code quality. Within the code development community, developers powerfully value omitting code comments. As a consequence, cracking the code becomes a bit of cake.

You've created awful code once another computer user cannot establish the factor attempting to try and do simply by gazing at the code. It's tough to resist the impulse to precise your dissatisfaction in the comments while operating in any field.

However, it' much more potent when you're writing code to satisfy your money goals. If you touch upon enough codebases, you'll encounter persons writing gloomy to dark and ill-hearted comments. These factors contribute to low code quality.

It's possible; however, code commenting continues to be valuably attributable to the advantages it will provide.

Code commenting and technical debt:

When you dismiss code commenting, there may be an extra chance of amassing technical debt. There could be different possibilities of technical debt while you do not correct errors because it is too high-priced to pursue it. This more remarkable attempt will value your time or money. However, it nonetheless constitutes a further burden. Commenting is a first-rate instance of this.

Adding explicit, complete feedback takes one more excellent hour consistent with the document's maximum time. It will, however, require the subsequent developer assigned to get familiar with it. Comprehending the code takes an hour if it has remarks and four without. Three extra hours you stored convey the value of 4 hours of a developer's time spent relearning your code.

Code comments types:

Before we state the code commenting best practices, let's first find out the types of comments. Interestingly, every programming language has its style of putting words. PHP, HTML, JavaScript, and C# utilize somewhat different symbols to begin and finish code. Distinguishing customs are there, but the vast majority are universal.

We'll go through a few kinds of comments you'll come across, as well as their uses and recommended practices.

Code Commenting for high code quality follows a few simple rules. Keep them concise, updated and use them in moderation. Never write too many comments.

1. Documentation Comments:

A file's or component's documentation might benefit significantly from these comments. The one just at the beginning of the 'index' file may clarify the purpose of the component's code accomplishes. They don’t need to review the complete code base.

But there are some cons of documentation comments. One of them is the difficulty of reading a code. These architectural comments should be kept and addressed in your project's design documentation.

2. Function Comment:

You may create function comments mechanically in various languages. At the same time, you are detailing the function's aim, parameters, and result. Your code's users won't see your data. So specifying just public functions is sufficient.

3. Logic Comments:

These are notes accustomed to clarifying advanced code methods within a function. Logic Comments are helpful once the code is too sophisticated.

Worse, logical comments are principally exhaustive. They carry prolonged info creating it troublesome to decipher the code.

Code commenting best practices:

It's crucial to observe those hints while commenting on the code.

1. Do Not Repeat The Code In Your Comments:

As a result of being skilled via way of their beginning teachers, many more recent builders made immoderate remarks. They regularly encompass a statement to the lowest of each concluding brace to suggest that a unit has come to an end.

Additionally, a few professors require that their newbies mark every little bit of code they create. It's crucial to recollect that Commenting on something now no longer supplying fee has a destructive impact because it multiplies the feel of seen noise at the web page and might grow obsolete if you no longer spend the vital time writing and analyzing it.

2. Good Comments Do Not Make Up For Ambiguous Code:

Additionally, you can abuse remarks if they include belongings you should have positioned within the code. An advanced variable call can also further reduce the requirement for comments.

If you're greater inquisitive about analyzing literature associated with code commenting practices, here's an e-book for you. Kernighan and Plauger stated in “The Elements of Programming Style” that "do not remark terrible code—rewrite it," and that they have been right.

It isn't always smooth to debug software programs while you no longer write the code. It might be great if you have been horrible at growing code to debug an expert code. Instead, rewrite the code in a sincere, straightforward way to study or, plenty higher, sincere.

3. Use Comments To Clear Misunderstandings, Not Add To Them

Sometimes, properly programmers will refuse to feature supply code remarks that describe the work. Even though they prefer an intelligent concept, it is no longer as par. Correct your observation if it contributes to the incorrect information instead of simply deleting it from the discussion.

4. In The Comments, Explain Any Unidiomatic Coding.

Be cautious about eliminating any current code you trust to be redundant earlier than continuing. Many may recollect it as a "compressed code," while others also recollect it weird but crucial magic to remember. To spare destiny authors time and worry, you ought to write down the reasoning behind the code.

The developer must decide now no longer whether or not the code needs a justification or now no longer.

5. Any Copied Code Should Be Linked To The Source

You're probably one of the overwhelming quantities of builders who every so often appoint a third-celebration code of their work. When you provide a connection with the original, the following target market can apprehend the full context, such as:

What precisely changed into the trouble this is now being dealt with here?

Whoever advanced the code, and the purpose of suggesting an answer is to explain why they loved it or failed to find it irresistible and how you could enhance it.

The Benefits Of Linking Copied Code To The Source:

Coders can be reluctant to renowned that they have not authored their code. However, a logical circulation cuts time and lets your content material be considered via a more excellent considerable range of capacity customers. Perhaps you ought to now no longer ever input code with which you are not acquainted.

A credit score is needed below Creative Commons licensing for a code like this. Those standards are glad via way of means of a reference statement. It is crucial to offer applicable tutorials for your class, other than the truth that it's miles a type of satisfaction to honor the specific lesson creator.

6. Provide External Connections Where They Are Most Helpful:

If required, offer remarks with any trouble fixes. When writing code, it is a sensible choice to encompass comments, simply now no longer while you're growing it initially, in addition to while you're seeking to clear up problems. There are numerous blessings, including observation for your code to resource visitors in describing the absolute and referenced methods, which consists of confirming your code.

It is likewise feasible to apply for malicious program reviews as a reference. If the domain names do now no longer have an outline, you ought to use the call in its place.

7. Incomplete Implementations Should Be Marked With Comments:

Even though the code has well-documented limitations, it could be vital to confirm it. As attractive as it could appear to hide regarded faults in somebody's code, it's miles constructive to render them obvious, for example, via way of using a TODO statement.

Using a general framework for this type of remark can also additionally beautify the evaluation and management of technical debt, that's advantageous.

8. Make A List Of Your Motivations For Accomplishing Anything:

A remark is a scientific technique for builders to explain their work. Not the whole thing approximately that isn't very pleasant. In the case of a feature or detail, please do not forget to explain what it is meant to perform!

The word "context" is being carried out to outline this type of information. It is vital to provide context for designers to assess better the machine selections made while growing a feature or component. When different builders need to adjust to your quality or module, you have to offer them the vital context.

9. Don't Cite Other Papers Or Comments In Your Work:

Annotations within the code or inner files describing a feature or detail are discouraged from being utilized. Written code remarks help builders speedy analyzing and comprehending the code they may be working on while at the job.

The concept of losing time looking up different software program remarks or going thru considerable documentation isn't something you're looking ahead to. If you need to write a guide to feel a bit of code, you are doing something incorrectly with your programming.

10. Add Notes To Your Code While You're Composing It:

Programmers regularly forget about code remarks after finishing their venture and transmitting it for inspection. Because if they've forgotten a part of the common sense they stated, the code can also encompass comments of decrease exceptional than you would have liked. It is particularly authentic if you specialize in a new net utility over many days. It's an excellent purpose to go away a notice after you've finished a feature or package.

Does code comment qualify as art?

Those worried about excessive code quality ought to set apart a while to write helpful code remarks. Mastering it isn't a day's matter. But who places inside the attempt can accomplish it in a given time. Remembering to offer the context inside the code remarks is an essential component of programming remember. In addition to explaining the code feature, it's miles vital to present the ordinary sense. Engineers will train your code strong if you offer them input parameters and outcomes.

Code remarks ought to be maintained to a bare minimum, if feasible. Or there's no want to install numerous effort and time into code remarks.


Having stated that plenty on code commenting best practices, let’s finish our findings. It's now no longer that we are careless programmers or designers inflicting the issue. As humans, we have to recognize the underlying reasoning concerned in changing code withinside the first place.

Let’s take the instance of coronary heart surgery. The physician has to now no longer apprehend the functioning of the coronary heart on my own. He can not forget about the operating of different frame organs and their impact on the coronary heart. Similarly, a programmer must first apprehend the underlying common sense earlier than updating code. If he does now no longer, can he pay the cost?

You may agree that remarks no longer restore or excuse awful code exceptional. You can also use them to help the target market get deeper information about the code they're analyzing. If you and your personnel observe those code commenting best practices, you may preserve time and frustration withinside the lengthy run. Although those code commenting best rules aren't comprehensive, you ought to seek enhancements within the remarks section.