How can I filter an array without using a loop in Perl?

Question

Here I am trying to filter only the elements that do not have a substring world and store the results back to the same array. What is the correct way to do this

Answer 1

That would be grep():

#!/usr/bin/perl

use strict;
use warnings;

my @arr = ('hello 1', 'hello 2', 'hello 3', 'world1', 'hello 4', 'world2');
my @narr = ( );

print "@arr\n";
@narr = grep(!/world/, @arr);
print "@narr\n";