Program comments in Perl: single-line comments and multi-line comments

(1) single line comment:

 

All rows starting with # are considered as comments by Perl.. But there isExceptionsThe first line of the Perl program starts with #. It specifies the interpreter of the Perl program.

Example: # print 1;

 

(2) multi-line comment:

The most common method is to use pod (plain old documentations) for multi-line comments. The method is as follows:

= Podcodes to comment = cut

Note: = pod = cut can only be at the beginning of a row

Start with = and end with = cut. 
Note: = it must be followed by one character. = Cut can be used later.