#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };

use Readonly;
Readonly my @arr => qw( a b c );

say "@arr";
eval { $arr[1] = 'B' };
say "@arr";
eval { splice @arr, 1, 1, 'C' };
say "@arr";

__END__
Output:
a b c
a b c
a b c


##</code><code>##

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,