#!/usr/bin/perl
# [[[ PREPROCESSOR ]]]
# <<< PARSE_ERROR: 'ERROR ECOPAPL02,' >>>
# <<< PARSE_ERROR: 'Useless use of negative pattern binding (!~) in void context' >>>
# [[[ HEADER ]]]
use RPerl;
use strict;
use warnings;
our $VERSION = 0.001_000;
# [[[ CRITICS ]]]
## no critic qw(ProhibitUselessNoCritic ProhibitMagicNumbers RequireCheckedSyscalls)  # USER DEFAULT 1: allow numeric values & print operator
## no critic qw(RequireInterpolationOfMetachars)  # USER DEFAULT 2: allow single-quoted control characters & sigils
# [[[ OPERATIONS ]]]
my string $foo  = 'howdy hello ahoy';
print 'have $foo = ', $foo, "\n";
$foo !~ s/ho/HO/gms;
print 'have changed $foo = ', $foo, "\n";