my $it = tqdm(100);
while (my $i = $it->next) {
    ...
}

##</code><code>##

use warnings;
use strict;

{
	package Iterator;
	use overload '<>' => sub {
		my $self = shift;
		if (wantarray) {
			my @all;
			while (defined( my $x = $self->() ))
				{ push @all, $x }
			return @all;
		}
		else { return $self->() }
	};
	sub new {
		my $class = shift;
		my @values = @_;
		my $i=0;
		return bless sub {
			if ($i>=@values) { $i=0; return }
			return $values[$i++];
		}, $class;
	}
}

use Test::More tests=>2;

my $it1 = Iterator->new(-5..5);
my @o1;
while (<$it1>) {
	push @o1, $_;
}
is_deeply \@o1, [-5,-4,-3,-2,-1,0,1,2,3,4,5];

SKIP: {
	skip "need Perl >= v5.18 for overloaded <> in list context",
		1 unless $] ge '5.018'; # [perl #47119]
	my $it2 = Iterator->new(-5..5);
	is_deeply [<$it2>], [-5,-4,-3,-2,-1,0,1,2,3,4,5];
}