Perlの1行コメントと複数行コメントの構文

#print "Hello,World!";

/*
 *Note several lines
 *Note several lines
 *Note several lines
*/

"""
 Use three double quotes and multi-line comments
 Use three double quotes, multi-line comments
 Use three double quotes, multi-line comments

"""

'''
 Use three single quotes and multi-line comments
 Use three single quotes, multi-line comments
 Use three single quotes, multi-line comments

'''

=begin

This is a comment.
This is a comment, too.
This is a comment, too.

=end

# This is a comment.
# This is a comment, too.
# This is a comment, too.

 =

 Multi-line comment content
 Multi-line comment content
 Multi-line comment content

 =cut

#! C:\Perl\bin\perl -w 
use strict; 
use warnings; 
use String::Util ':all'; 
use 5.016; 
=my $element = " abc "; 
printf "<%s>\n", trim($element); 
printf "<%s>\n", trim($element, right => 0); 
printf "<%s>\n", trim($element, left => 0); 
=cut