Bug that drove me nuts, a reference to an array in the callback prevents process_feeds from emptying it...

gistfile1.pl

# can you spot the bug below?

sub load_and_go {
  my $self = shift;
  $self->render_later();
  my $subs = $self->backend->feeds->find({xmlUrl => $self->param('src')})->all;
  $self->process_feeds(
    $subs,
    sub {
      $self->redirect_to(
        $self->url_for('/view/feed')->query({src => $subs->[0]->{xmlUrl}}));
    }
  );
}

# no bug

sub load_and_go {
  my $self = shift;
  $self->render_later();
  my $subs = $self->backend->feeds->find({xmlUrl => $self->param('src')})->all;
  $self->process_feeds(
    $subs,
    sub {
      $self->redirect_to(
        $self->url_for('/view/feed')->query({src => $self->param('src')}));
    }
  );
}

dotandimet/hadashot@f6fd3d3#diff-55350b807721cf5f5252f3abc989d122

Same bug here too, I think: https://github.com/dotandimet/hadashot/blob/master/lib/Hadashot/Settings.pm#L91