VBA, or Visual Basic for Applications, is a programming language that is commonly used for automating tasks in Microsoft Office applications such as Excel, Word and PowerPoint. It is a powerful tool that allows you to create macros and scripts that can save you time and make your work more efficient. If you’re new to programming and want to learn how to automate tasks in Office applications, VBA is a great place to start.
One important aspect of writing any program is making it easy to understand and maintain. One way to do this is by using comments. Comments are pieces of text that you add to your code that describe what the code is doing. They are ignored by the computer when the code is executed, but they can be very helpful for humans who are reading and working with the code.
In VBA, you can add comments to your code by using the apostrophe (‘) character. Anything that comes after the apostrophe on a line is considered a comment and will be ignored by the computer. For example:
'This is a comment
When you’re writing a comment, it’s important to make sure that it is clear and informative. You should aim to describe what the code is doing and why it is doing it. Comments should also be concise and to the point.
It’s also a good practice to use comments to indicate the start and end of a block of code, like a function or a loop. This way, it’s easier to understand the overall structure of the code and how different parts of it are related.
Using comments can also help you to keep track of what you’ve done and why you did it. It can be especially useful if you come back to the code after a long time away or if someone else needs to work on the code after you. Comments can act as a kind of “memory” for the code, making it easier to understand and maintain.
Additionally, comments can be used to provide additional information about your code. For example, you might use comments to indicate the version of the code, the date it was last modified, or the name of the person who wrote it. This information can be useful for understanding the history of the code and for troubleshooting any issues that might arise.
In summary, comments are an important aspect of writing clear and maintainable VBA code. By using comments, you can make it easier for yourself and others to understand what your code is doing and why. It’s a good practice to use comments to describe the overall structure of your code, to indicate the start and end of a block of code and to provide additional information about your code. Comments can act as a kind of “memory” for your code and make it easier to understand and maintain in the future.
VBA for Beginners – Chapter 02 : Comments
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