Is ‘# -*- coding: utf-8 -*-‘ also a comment in Python?

Yes, it is also a comment. And the contents of that comment carry special meaning if located at the top of the file, in the first two lines. From the Encoding declarations documentation: If a comment in the first or second line of the Python script matches the regular expression coding[=:]\s*([-\w.]+), this comment is processed as an encoding declaration; the … Read more

How to “comment-out” (add comment) in a batch/cmd?

The rem command is indeed for comments. It doesn’t inherently update anyone after running the script. Some script authors might use it that way instead of echo, though, because by default the batch interpreter will print out each command before it’s processed. Since rem commands don’t do anything, it’s safe to print them without side effects. To avoid printing a command, prefix … Read more

Comments in Markdown

I believe that all the previously proposed solutions (apart from those that require specific implementations) result in the comments being included in the output HTML, even if they are not displayed. If you want a comment that is strictly for yourself (readers of the converted document should not be able to see it, even with … Read more

Comments in Markdown

I believe that all the previously proposed solutions (apart from those that require specific implementations) result in the comments being included in the output HTML, even if they are not displayed. If you want a comment that is strictly for yourself (readers of the converted document should not be able to see it, even with … Read more

How do you comment out code in PowerShell?

In PowerShell V1 there’s only # to make the text after it a comment. In PowerShell V2 <# #> can be used for block comments and more specifically for help comments. For more explanation about .SYNOPSIS and .* see about_Comment_Based_Help. Remark: These function comments are used by the Get-Help CmdLet and can be put before the keyword Function, or inside the {} before or after the code itself.

Can comments be used in JSON?

No. The JSON is data only, and if you include a comment, then it will be data too. You could have a designated data element called “_comment” (or something) that should be ignored by apps that use the JSON data. You would probably be better having the comment in the processes that generates/receives the JSON, … Read more

How do you do block comments in YAML?

YAML supports inline comments, but does not support block comments. From Wikipedia: Comments begin with the number sign ( # ), can start anywhere on a line, and continue until the end of the line A comparison with JSON, also from Wikipedia: The syntax differences are subtle and seldom arise in practice: JSON allows extended … Read more