How do you comment out a line in a file?

How do you comment out a line in a file?

Or, to “comment out” a line, add a # character to the start of the line. (Note that some languages have different comment formats, so this may not be true if you’re working with a source code file.) For example, let’s say you have a file with the following text: # To enable feature X, uncomment the line below.

How to comment out and uncomment lines in a configuration file?

To uncomment the section and enable the feature, you’d change this section to: This is a multi-line PHP comment (C-style comment) where /* begins the comment and */ ends the comment. The above article may contain affiliate links, which help support How-To Geek.

How to count the number of comments in a file?

So n == # of lines in the file. And then for multiline comments, you do the same thing, and just count /, just like above. You’ll just have to keep an eye on when n gets incremented (every line), and when the other ones get incremented (Once for every line with // and once for every line that starts with / and until you hit a */).

How to uncomment lines in a configuration file in PHP?

For example, if you’re working with a PHP script, you might see a section like the one below: To uncomment the section and enable the feature, you’d change this section to: This is a multi-line PHP comment (C-style comment) where /* begins the comment and */ ends the comment.

When do you need multiple lines of comments?

The update in the dbenham’s answer gave me some ideas. First – there are two different cases where we can need multi line comments – in a bracket’s context where GOTO cannot be used and outside it.

How to comment multiple lines in DOS batch file?

Wich combined with the macros for brackets comments can make the both cases to look almost the same.

What’s the difference between block comment and single line comment?

The first is called a single line comment and, as implied, only applies to a single line in the “source code” (the program). The second is called a Block comment and refers usually refers to a paragraph of text. A block comment has a start symbol and an end symbol and everything between is ignored by the computer.

Where do you write your comments in HTML?

Write your comments here –> Notice that there is an exclamation point (!) in the start tag, but not in the end tag. Comments are also great for debugging HTML, because you can comment out HTML lines of code, one at a time, to search for errors:

How to comment multiple lines in Visual Studio Code?

Select the lines you want to comment. Then press Ctrl + /. In windows you need to press ctrl + / in mac you can do ⌘ + / to make multiple comment. Then if you want to un-comment then select the lines again and then press ctrl + / (in windows) again ⌘ + / (in mac).