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 in Perl?
$ cat test.pl
use strict;
use warnings;
my @arr = ('hello 1', 'hello 2', 'hello 3', 'world1', 'hello 4', 'world2');
print "@arr\n";
@arr =~ v/world/;
print "@arr\n";
$ perl test.pl
Applying pattern match (m//) to @array will act on scalar(@array) at
test.pl line 7.
Applying pattern match (m//) to @array will act on scalar(@array) at
test.pl line 7.
syntax error at test.pl line 7, near "/;"
Execution of test.pl aborted due to compilation errors.
$
I want to pass the array as an argument to a subroutine.
I know one way would be to something like this
$ cat test.pl
use strict;
use warnings;
my @arr = ('hello 1', 'hello 2', 'hello 3', 'world1', 'hello 4', 'world2');
my @arrf;
print "@arr\n";
foreach(@arr) {
unless ($_ =~ /world/i) {
push (@arrf, $_);
}
}
print "@arrf\n";
$ perl test.pl
hello 1 hello 2 hello 3 world1 hello 4 world2
hello 1 hello 2 hello 3 hello 4
$
I want to know if there is a way to do it without the loop (using some simple filtering).