Comments in Perl

Comments in any programming language are friends of developers. Comments can be used to make program user-friendly and they are simply skipped by the interpreter without impacting the core functionality. For example, in the above program, a line starting with hash # is a comment.

Simply saying comments in Perl start with a hash symbol and run to the end of the line −

# This is a comment in perl

Lines starting with = are interpreted as the start of a section of embedded documentation (pod), and all subsequent lines until the next =cut are ignored by the compiler. Following is the example −

Example

 Live Demo

#!/usr/bin/perl
# This is a single line comment
print "Hello, world\n";
=begin comment
This is all part of multiline comment.
You can use as many lines as you like
These comments will be ignored by the
compiler until the next =cut is encountered.
=cut

Output

This will produce the following result −

Hello, world